反假货币知识练习题搜答案神器-凯时尊龙登录入口

菜椒学霸网

    反假货币知识练习题搜答案神器


    we have played a tremendous role in the evolution of the earth’s natural systems.

    we have an obligation to maintain the environment, as we depend on the resources and services it provides.

    natural resources are materials made right from nature and then turned into products that we use in our manufacturing.

    non-renewable resources are capable of re-growing or renewing themselves quickly.

    natural forces are beyond human control.

    directions: fill in the blanks with the following words: fail deep hearts mind accord advance look _____________ into nature, and then you will understand everything better.

    the chinese idiom “天人合一” means man is an integral part of nature.

    compared with our ancestors, we tend to become more dependent on nature directly.

    the balanced relationship between man and nature and between nature and society is now on the verge of collapse.

    one of the most distinct features of modern technology is the upgraded cycle of natural processes.

    enterprises and countries should be more responsible for the solution to the man-nature relationship problems than should iniduals.

    such images ____________ social and cultural constructions, and at the same time, may serve tointerpret the relationships of the human realm.

    the new haircut completely ____________ her.

    john advised him to ____________ from rome airport to the railroad station.

    george conway called for congress to _____________ president donald trump from office.

    snaking her upper torso over the back of the seat, she began to _____________ her weight toward the back of the car.

    you’d better write your summary no longer than the half the length of the original.

    your summary can contain some of the viewpoints of your own.

    when writing a summary, you should never copy from the original.

    when writing a summary, you can collapse lists and paragraphs.

    try to get rid of unimportant or trivial details in your summary.

    an effective paragraph includes a well-focused topic sentence, specific supporting details and examples.

    topic sentences identify what a paragraph is about and always appear at the beginning of the paragraph.

    concluding or transitional sentences only serve as the the function of closing the paragraph.

    supporting details include evidences which support the topic sentences, including examples, facts, statistics, personal experience, definitions and so on.

    the criteria for an effective paragraph consist of unity, coherence and transition.

    _____________ is a situation where resource use has outpaced the sustainable capacity of the ecosystem.

    _____________ is the process of extracting coal from the ground.

    sustained _____________ can lead to critical depensation, where the fish population is no longer able to sustain itself.

    the license is non-exclusive, non-_____________ and time limited.

    you can _____________ information on any subject through meditation.

    whenever you have an aim you must sacrifice something of freedom to _____________ it.

    the following exercises will help you gain greater understanding about how prepositional phrases work. choose the best answer to complete each sentence. there are lots of birds nesting _____________________.

    the following exercises will help you gain greater understanding about how prepositional phrases work. choose the best answer to complete each sentence. after school, the children played tag ________________.

    the following exercises will help you gain greater understanding about how prepositional phrases work. choose the best answer to complete each sentence. __________________ the chair sat mouldering in the attic.

    the following exercises will help you gain greater understanding about how prepositional phrases work. choose the best answer to complete each sentence. i gave the children pizza ______________ pancakes for breakfast today.

    fill in the blanks with the following words: imperfect impractical imbalance independent inevitable irreplaceable it was totally __________ to think that we could finish the job in two months.

    fill in the blanks with the following words: imperfect impractical imbalance independent inevitable irreplaceable we all have our own life, learning to be __________.

    fill in the blanks with the following words: imperfect impractical imbalance independent inevitable irreplaceable you are __________, the one and the only.

    fill in the blanks with the following words: imperfect impractical imbalance independent inevitable irreplaceable we are not alone in the world so that it is __________ to make connection with each other.

    fill in the blanks with the following words: imperfect impractical imbalance independent inevitable irreplaceable in the enterprise, inventory is a “reservoir”, regulating the __________ between the production and demand.

    the following are steps of writing a summary. some important information is missing. please fill in the blanks to complete these steps. important shorter summarized language major points introduced facts interesting reading the text to be __________ and making sure you understand it.

    the following are steps of writing a summary. some important information is missing. please fill in the blanks to complete these steps. important shorter summarized language major points introduced facts interesting outlining the text and noting the__________.

    the following are steps of writing a summary. some important information is missing. please fill in the blanks to complete these steps. important shorter summarized language major points introduced facts interesting selecting the most __________ ideas or facts from the text.

    the following are steps of writing a summary. some important information is missing. please fill in the blanks to complete these steps. important shorter summarized language major points introduced facts interesting rewriting those ideas/facts in a short, concise form, using your own __________.

    the following are steps of writing a summary. some important information is missing. please fill in the blanks to complete these steps. important shorter summarized language major points introduced facts interesting producing a text which is __________ than the original.

    每题1分,共10分。

    the word technology comes from the arabic word, techne, meaning “science of production”.

    technology can also be the knowledge of techniques, processes, and the like.

    the development and use of advanced tools is the simplest form of technology.

    the "new stone age" around 10,000 years ago saw the invention of metal tools and the wheel.

    directions: fill in the blanks with the following words: education training possibilities realities wisdom useless _____________ makes machines which act like men and produces men who act like machines .

    directions: decide whether the following statements are true or false according to text a. technology and happiness are not necessarily closely correlated.

    directions: decide whether the following statements are true or false according to text a. currently people mostly center on the negative effects of technology on human relations.

    directions: decide whether the following statements are true or false according to text a. the most prominent impact of technology on humans is in the field of transportation.

    directions: decide whether the following statements are true or false according to text a. the relationship between technology and happiness is paradoxical.

    directions: fill in the blanks with the following words: medical health care is a part of care.

    directions: fill in the blanks with the following words: medical health care is the service offered by medical professionals such as physicians, surgeons to iniduals.

    directions: fill in the blanks with the following words: medical health physicians deliver care to their patients. they do not deliver “ ” to patients.

    an introductory paragraph presents a topic which usually appears near the end of the introductory paragraph.

    an introductory paragraph must indicate a plan of development.

    a concluding paragraph reminds the reader of your thesis idea and brings the paper to a natural and graceful end.

    advances in __________ have improved crop yields by over 30%.

    her huand is a good __________, so he likes fixing old computers.

    she’s a wonderful skater, her __________ is superb.

    this __________ method has been introduced in every factory.

    expensive restaurants aren’t __________ the best.

    well, all of us want to be rich like him to enjoy __________, leisure and loftiness .

    her boyfriend is a distant __________ of mine.

    introductory paragraph encourages readers to continue reading the essay.

    introductory paragraph doesn’t need to present a thesis statement.

    introductory paragraph can start with idea or a situation that is the opposite of the one you will develop.

    a quotation in an introductory or concluding paragraph should be a popular saying rather than something said by your friends or family.

    a concluding paragraph reminds the reader of your thesis idea.

    in the summary of a concluding paragraph, you can use the exact wording you used before.

    direction: fill in the blanks with the following words to create paradoxes: nothing message failures successes young bitter butter temptation read i know one thing: that i know __________.

    direction: fill in the blanks with the following words to create paradoxes: nothing message failures successes young bitter butter temptation read i can resist anything but __________.

    direction: fill in the blanks with the following words to create paradoxes: nothing message failures successes young bitter butter temptation read some of the biggest failures i ever had were __________.

    direction: fill in the blanks with the following words to create paradoxes: nothing message failures successes young bitter butter temptation read what a pity that youth must be wasted on the __________.

    direction: fill in the blanks with the following words to create paradoxes: nothing message failures successes young bitter butter temptation read i only message those who do not __________.

    direction: fill in the blanks with the following words to create paradoxes: nothing message failures successes young bitter butter temptation read truth is honey, which is __________.

    每题1分,共10分。

    adolf hitler initiated the first world war in europe.

    deng jiaxian is a chinese nuclear physicist and regarded as the “father of china’s nuclear program”.

    sister feng became an instant internet celebrity because of her special talents in singing.

    jakie chen is an actor, director, singer as well as a philanthropist.

    directions: fill in the blanks with the following words: vanity burden whatever failure success purpose fame fame is a heavy _______.

    directions: fill in the blanks with the following words: vanity burden whatever failure success purpose fame the highest form of ________ is love of fame.

    directions: fill in the blanks with the following words: vanity burden whatever failure success purpose fame the secret of success is constancy of ________.

    according to the author, it is fame and the publicity that may destroy the talent of a person.

    for those who look for fame, failure is not necessarily a bad thing.

    the author takes a positive attitude towards fame.

    according to the author, people tend to seek fame only for wealth.

    earthquakes commonly _________volcanic activity.

    we finally ________ them of our innocence.

    the company’s position _________ overtime is made clear in their contracts.

    many shoppers _______ from products that were not environmentally friendly.

    an effective paragraph includes a well-focused topic sentence, specific supporting details and examples.

    topic sentences identify what a paragraph is about and always appear at the beginning of the paragraph.

    concluding or transitional sentences only serve as the the function of closing the paragraph.

    supporting details include evidences which support the topic sentences, including examples, facts, statistics, personal experience, definitions and so on.

    the criteria for an effective paragraph consist of unity, coherence and transition.

    the civil administration promises that they would not turn_________ anyone who comes to the relief center for help.

    the masses are more likely to replace an unchanging ritual by _________which changes often as possible in the economic interest of certain people.

    equal employment shall be accorded to all qualified iniduals without _________ to color or sex.

    my child __________ to my apron, and would not let go.

    her first novel was ________ by over 30 publishers.

    children under 14 years old must be _________ by s.

    he failed to convince the jury _________ his innocence.

    the local policeman ________ the man to the fbi.

    it was so dark and cold in the tunnel that little tom _________ his father’s hand in fear.

    he was swimming ________ toward the sea shore.

    fill in the blanks with the following words:(答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase the local newspaper has _________ a compaign to raise money for the girl who has caught a rare disease.

    fill in the blanks with the following words:(答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase a ________ may have to live in a goldfish bowl and can hardly have his or her privacy.

    fill in the blanks with the following words:(答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase due to its inefficiency, the cable tv company has become a frequent ________ of critici from the public these days.

    fill in the blanks with the following words:(答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase the film star’s third marriage got a lot of _________.

    fill in the blanks with the following words: (答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase his parents held him in high _______ and they supported his decision to be an actor.

    fill in the blanks with the following words: (答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase our new product enjoys ________ throughout the world.

    fill in the blanks with the following words: (答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase food is _________ provided for the refugees and free of charge.

    fill in the blanks with the following words: (答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase if strangers should venture into that field, the bull will ______ them.

    fill in the blanks with the following words: (答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase the _______ applauded at the end of the concert.

    fill in the blanks with the following words: (答案只填写字母代码) a. launched b. sufficiently c. celebrity d. popularity e. audience f. regard g. delighted h. target i. publicity j. chase my wife was very much ______ that all the things had returned to normal once more.

    每题1分

    according to the author, a man is a laborer if he is not interested in what he does but is compelled to take it by the necessity of earning a living and supporting his family.

    according to the author, everyone can become a worker in a modern technological society.

    to a worker, leisure means simply the hours he needs to relax and rest in order to work efficiently.

    the development of technology and the ision of labor have turned a large amount of boring labor into enjoyable work.

    the author calls a laborer a wage slave because a laborer’s social value depends on the money he is paid.

    banishes perspiration deserts achieved worth genius is one percent inspiration and ninety-nine percent ____________.

    banishes perspiration deserts achieved worth work is something you can count on, a trusted, lifelong friend who never __________ you.

    banishes perspiration deserts achieved worth you’ve ___________success in your field when you don’t know whether what you’re doing is work or play.

    how can one feel free and important in his work?

    what does “voluntary play” mean in this context (para. 3)

    what does the author say about workers in para. 3?

    in making comments about laborers having too much leisure, why does the authors say “the prospect is not cheerful”?

    the reason lies mostly in the relationship with the m_______ (大众) material interest and necessity.

    among all the voting people, the great majority agreed to a_____ (废除)this kind of cruel punishment as it is against morality.

    mr. jones has e________ (确立,确定)himself as one of the foremost doctors treating cancer patients.

    most often, a listing paragraph starts with a general statement and proceeds to details.

    a list paragraph has 3 parts: paragraph introduces, supporting examples and a terminator sentence.

    the example paragraph is different from the list paragraph , in which example sentences support the topic sentence disorderly.

    in listing, we must have enough number of ideas (at least three) to be listed.

    they tossed your thoughts back and forth for over an hour, but still could not make ___________ of them.

    there is no sense ________ leaving inexperienced people to make important decisions.

    his answer was so confused that i could hardly make any _______ of it at all.

    he is still _______ after the accident, which made us all surprised.

    david likes country life and has decided to ______ farming.

    only under special circumstances _______ to take make-up tests.

    he reached the station exhausted, only ______ that the train had just left.

    he was _____ willing to accept the proposal.

    _________ i would say sixteen per cent, and i do not think that figure is likely to get bigger in the future.

    the table was very large and heavy. in fact it was so ______ that it could not be moved.

    the only difference between them is a laborer is paid while a slave is not.

    play is a social activity that one can enjoy himself in it. the people around us like it very much.

    a man is a worker if he is not interested in what he does but is compelled to take it by the necessity of earning a living and supporting his family.

    they have made a very large number of paid occupations which formerly were enjoyable work into boring labor.

    because they can put their aggression into their work, workers seldom commit acts of violence according to the author.

    efficiently undertakes prospect compelled aggression he cannot be really happy if he is____________ by society to do what he does not enjoy doing, or if what he enjoys doing is ignored by society as of no value or importance.

    efficiently undertakes prospect compelled aggression to a worker, leisure means simply the hours he needs to relax and rest in order to work___________.

    efficiently undertakes prospect compelled aggression the role of ___________ in mental work is aptly expressed by the phrase “getting one’s teeth into a problem”.

    efficiently undertakes prospect compelled aggression whether a job is to be classified as labor or work depends, not on the job itself, but on the tastes of the inidual who ____________it.

    efficiently undertakes prospect compelled aggression when one recalls how aristocracies in the past actually behaved, the _________is not cheerful.

    单元作业

    1.a need is something you have to have, something you can't do without.

    2.name-brand clothes, fancy foods and drinks, and luxurious cars are needs.

    3.an impulse purchase is a planned decision to buy a product or service.

    4.the expression “keeping up with the joneses” was created by a british writer.

    5.many people do things just to keep up with their neighbors.

    directions: fill in the blanks with the following words: yield frugality irreplaceable luxury irresponsible manage 1. without _____________ none can be rich, and with it very few would be poor.

    directions: fill in the blanks with the following words: yield frugality irreplaceable luxury irresponsible manage 4. the saddest thing i can imagine is to get used to _____________.

    1. the couple began to adopt a frugal lifestyle because they made less money now and couldn’t afford many things they had had before.

    2. the birth of their daughter was the trigger for the couple to turn to a simple lifestyle.

    3. after they had decided to change their lifestyle, the wife didn’t work any more and became a housewife.

    4. in order to adjust to the new way of life, they spend money only on things that contributed to their major goal.

    5. the author felt like a helpless child at the end of the shopping trip because she bought something on impulse and she regretted.

    1. a right choice can bring about considerable ____________ of the process and make it easier to follow.

    2. the internet society, like a goldfish bowl, may ____________ anyone of his privacy.

    3. the shop assistants had to have their days off _____________.

    4. she tries to _____________ her ex-boyfriend over the internet and wants to see who he is dating now.

    2. narrative point of view describes the position of the narrator in relation to the story being told.

    5. the basic elements of narratives are who, what, when, where, and how of an occurrence.

    1. the climbers were__________ down to their basic outfit in order to ensure a perfect performance.

    2.the style is obviously marked by __________, clarity, and straightforwardness.

    3.for a couple of years i was working on a __________ basis; then i was hired by a big company in 1998 and have been working there ever since.

    4.if we over-manage our children’s lives we __________ them of opportunities to learn and gain wisdom from their mistakes.

    5.it is proved that making a mistake may __________ to be a good thing because you can learn something from the mistake.

    6.we distribute the books to charities, and those organizations __________ give the books to needy children.

    7.he tried to __________ his grandparents of the safety of travelling by airplane.

    8.we offer __________ activities for students after class: sports and non-competitive games.

    17.sara and michael used to be both busy with their respective work.

    18.after sara lost her job, they decided to change their lifestyle.

    19.michael kept his full-time job because he wanted to earn enough money for the family.

    20. the couple gave up many things in order to adapt to the new lifestyle.

    fill in the blanks with the following words: deprivation raise diount counterpart irrational resolve autobiography transplant you can search through his __________ without finding a single reference to his first wife.

    fill in the blanks with the following words: deprivation raise diount counterpart irrational resolve autobiography transplant president clinton met with his mexican __________ before inauguration day in january of 1993.

    fill in the blanks with the following words: deprivation raise diount counterpart irrational resolve autobiography transplant the two communities are trying to learn how to __________ their dispute.

    fill in the blanks with the following words: deprivation raise diount counterpart irrational resolve autobiography transplant i had to __________ from my bicycle halfway up the hill. it’s just too difficult riding uphill.

    fill in the blanks with the following words: deprivation raise diount counterpart irrational resolve autobiography transplant his behavior was becoming increasingly __________. was he crazy?

    fill in the blanks with the following words: deprivation raise diount counterpart irrational resolve autobiography transplant only 12 weeks ago he underwent major heart __________ surgery.

    fill in the blanks with the following words: deprivation raise diount counterpart irrational resolve autobiography transplant i had asked everyone to __________ questions in advance of the meeting.

    每题1分,共10分。

    1. in author's opinion, the art of living is to know when to hold fast and when to let go.

    2. "paradox" is a situation which is strange because it involves two qualities that could not be true at the same time.

    directions: complete the following sentences with the correct words in the box. travel cruise journey trips voyages tour 2. life’s ______ is about learning, growing, and changing.

    directions: please match the following statements with the famous persons who said them. 1. my only love sprung from my only hate!

    directions: please match the following statements with the famous persons who said them. 2. “whatever you do will be insignificant, but it is very important that you do it.”

    the art of living is to know when to hold fast and when to let go.

    the second key to happiness is to have the right attitude. happiness is an attitude of mind. happy people focus on what they have, unhappy people focus on what’s missing.

    "a man comes to this world with his fist clenched" means that a man holds fast to the gift of life and never let it go.

    writers use sensory language as a means of making their writing more realistic and descriptive.

    most writers use sensory language to create an emotional connection between the reader and the characters in the story.

    “paint the town red” means the town is filled with violence and crimes.

    i finally passed my driving test. i’m as happy as a dog with two tails!

    a journey of a thousand miles must begin with a single step.

    the statement "less is more" is a paradox.

    lbert einstein said “i know one thing: that i know nothing.”

    complete the following sentences with the correct words in the box. travel cruise journey trips voyages tour captain cook safely navigated his ship without accident for 100 ____________.

    complete the following sentences with the correct words in the box. travel cruise journey trips voyages tour life’s ______ is about learning, growing, and changing.

    complete the following sentences with the correct words in the box. travel cruise journey trips voyages tour he also made official _________ to eastern europe, the middle east, and africa.

    complete the following sentences with the correct words in the box. travel cruise journey trips voyages tour it took me fourteen hours to _________ from toronto to beijing by plane.

    complete the following sentences with the correct words in the box. travel cruise journey trips voyages tour we took a _______ of italy, we visited milan, rome and florence. it was great!

    complete the following sentences with the correct words in the box. travel cruise journey trips voyages tour we took a luxury _______ to the caribbean, it was amazing.

    when one door of happiness closes, another opens, but often we look so long at the ________ door that we do not see the one which has been opened for us.

    attitude is a little things that makes a big ________.

    life has two opposite poles: one is to hold fast to life and the other is to let ________of it.

    life will go on no matter what happens. we must look at it from a wider perspectives and learn to apply the two paradoxical ______to our everyday life.

    每题1分

    在数值计算中因四舍五入产生的误差称为

    当今科学活动的三大方法为

    计算过程中如果不注意误差分析,很容易造成结果的错误。

    某函数过(0,1),(1,2)两点,则其关于这两点的一阶差商为

    下列说法不正确的是

    下列说确的是

    同一个函数基于同一组插值节点的牛顿插值函数和拉格朗日插值函数等价。

    n 次chebyshev多项式在 (-1,1) 内互异实根的个数为

    在所有最高次项系数为1的n次多项式中,在 [-1,1] 上与零的偏差最小的是( )

    用正交函数族做最小二乘法有什么优点

    用正交多项式作基求最佳平方逼近多项式,当n较大时,系数矩阵式高度病态,舍入误差很大。

    所有最佳平方逼近问题中的法方程的系数矩阵为hilbert矩阵。

    fft算法计算dft和它的逆变换效率相同。

    当( )时牛顿-柯特斯公式的稳定性不能保证。

    以下关于数值积分的说确的是( )

    下面关于数值微分说确的有( )

    插值型求积公式的系数之和为积分区间的长度

    复化simpson公式比复化梯形公式精度更高。

    romberg公式还可继续进行外推。

    下列说确的是( )

    gauss消去法及其某些变形时解低阶稠密方程组的有效方法。

    如果矩阵a有lu分解,则问题ax=b就等价于求解两个三角方程组。

    若a为对称阵,且a的所有顺序主子式均不为零,则a可唯一分解为a=ldu,其中,l为单位下三角矩阵,d为对角阵,u为单位上三角阵。

    下面是弱对角占优矩阵有( )

    1. 当数学模型不能得到精确解时,通常用数值方法求它的近似值,其近似解与精确解之间的误差称为( )

    在所有最高次项系数为1的n次多项式中,在[-1,1]上与零的平方误差最小的是( )

    fft算法的运算量为( )

    数值运算中误差分析的方法和原则包括( )

    下面结论正确的有( )

    用legendre多项式展开做最佳平方逼近的优点有( )

    下面关于数值求积公式说确的有( )

    下面关于gauss数值积分公式说确的是( )

    下列说确的是( )

    下列矩阵为严格对角占优矩阵的有( )

    分段线性插值可以避开龙格现象。

    用正交多项式作基求最佳平方逼近多项式,当n较大时,系数矩阵式高度病态,舍入误差很大。

    曲线拟合的最小二乘法和离散fourier变换都可由最佳平方逼近得到。

    数值求积必须已知被积函数的解析式。

    弦截法与牛顿法都是线性化方法,二者没有本质区别。

    高斯消去法的过程包括消元过程和回代过程。

    本周作业为《大学物理练习与思考》p122-123中2、3、4、8、12题,题目在附件中,同学不必抄题,做完后将答案拍照上传即可。

    本周作业内容为练习与思考p124-14、15、17 p136-4、6、11、12、14

    p.144—1,2 p.145—6,7,8 p.152—3,4,5

    p.153—6,8,12,16 p.154—18,23

    p.164—1,4,6,8 p.165—12,16 p.166—18, 20

    练习与思考 p.166—22 p.178—4,6 p.179—8,10

    p.187—2,3,5,8 p.188—10,12,13 p.189—19,20

    p.189—22,23 p.190—25 p.204-1,6,7

    p.205-13 p.206-17,18,20 p.207-23

    p.220-8,10,11,14,16 p.221-18,24

    p.241-2 p.242-5,8,9 p.243-14,15,17,21

    p.244-24,25 p.254-1,3,5; p.255-11,13,16

    根据 ,推断x的化学式( )

    下列物质中不需要密封保存的是()

    下列实验基本操作正确的是( )

    下列物质中属于纯净物的是()

    无定形硅为黑色粉末,可用镁与二氧化硅反应制得,其化学反应方程式为:()

    上海世博会的一个重要领域和内容是“环保、绿色、节能”,世博会园区内将采用目前在环保节能方面的一些新技术、新能源和新材料。不属于上述情况的是()

    在以下食物中,遇碘水变蓝的是( )

    下列关于氯化钠的说确的是()

    物质发生化学变化时常伴随一些现象发生。下列有关实验现象的描述与事实不相符合的是()

    实验室制取并收集氧气常用的一组仪器是( )

    能与硝酸汞溶液反应,但不能与盐酸反应的是()

    生活中可接触到许物质,生活中的物质属于有机化合物的是()

    下列说确的是()

    下列物质的ph最接近中性的是()

    一个人在独立工作、无人监督时,仍能谨慎遵守道德原则,这就叫做( )。

    联系教学实际,说明学习策略的层次分类。

    试述程序性知识与陈述性知识的区别与联系。

    在马斯洛需要层次理论中,自我实现是一种高级需要,它包括认知、_________创造的需要。

    请说说幼儿记忆发展中易出现的问,你如何采取应对措施

    __________是指一个人是否认识到自己的行动目的,并调整和控制行动的意志品质。与其相反的不良品质是受暗示性和独断性。

    确定教育目的的客观依据是( )

    某幼儿给“鱼”下定义时说:“鱼是一种会游的动物”。该幼儿的概括水平为()。

    —peter,where did you guys go for the summer vacation —we working for months,so we went to the beach to relax ourselves

    发现教学要进行得顺利,关键在于__________要符合学生实际水平。

    认知领域的教学目标分为知识、领导、应用,分析、综合和评价等六个层次,形成低到高的阶梯

    儿童在知道“苹果”、“葡萄”和“香蕉”等概念之后,再学习“水果”这个概念,这种学习是( )。

    林黛玉睹流水伤情,见落花流泪,这种情绪状态称为( )。

    新知识与原有认知结构的关系,知识的学习可以分为( )。

    在新药创制中,首先是通过筛选,发现_________,合成一系列目标化合物,优选出最佳的有效化合物。

    对某一组分来说,反应产物所消耗掉的物料量与投入反应物料量之比简称该组分的_____。

    某主要产物实际收得的量与投入原料计算的理论产量之比值,称为_____。

    主产物生成量折算成原料量与反应掉原料量之比称为_____。

    比较下列物质的反应活性( )。

    下列酰化剂在进行酰化反应时,活性最强的是( )

    可在器内设置搅拌器的是( )

    搅拌的作用是强化( )。

    f-c酰化反应不能用于( )。

    用于制备解热镇痛药阿司匹林的主要原料是( )。

    从含氧的无机酸、有机酸或磺酸等分子中除去( )后所剩余的基团称为酰基。

    下列可用于酯化反应的酰化试剂的是( )。

    酸酐多用于活性较低的氨基或羟基的酰化,常用的酸酐是( )

    下列物质属于酰化剂是( )

    阿司匹林解热作用的特点是( )

    对乙酰氨基酚具有哪些性质( )

    以产品品种为准而制定的安全操作、安全生产、防火防爆、防尘防毒、安全卫生知识为一体的法规性管理制度是( )

    在农业上常用稀释的来浸种,给种子消毒。该溶液中含有( )

    化工生产上精馏塔常常用于( )设备

    压力表上显示的读数是指( )

    釜式反应器的换热方式有( )

    下列常用酰化试剂,活性最大的是(   )

    最易与乙酸酐发生酰基化反应的是( )

    氧原子的酰化反应中常用的酰化试剂不包括( )

    苯酚和乙酰氯进行f-c反应时,在硝基苯溶剂中,产物主要是( )

    friedel-crafts反应(傅-克反应)常用lewis酸或质子酸作为催化剂,最常用的催化剂是(  )。

    n-酰化可用( )做酰化剂

    由于酰化时生成的氯化氢与游离氨结合成盐,降低了n-酰化反应的速度,因此在反应过程中一般要加入缚酸剂来中和生成的氯化氢,下列哪些是常用的缚酸剂( )

    在酯化后进行产物分离时可以通过下列哪些方式实现( )

    胺类酰化时可以用( )作为催化剂

    下列可用于酯化反应的酰化试剂的是( )

    从含氧酸中除去羟基后所剩的基团称酰基。

    氨基氮原子上电子云密度越高,碱性越强,则胺被酰化的反应性越强。

    醇和酸发生酯化反应的过程,一般是:羧酸分子中羟基上的氢原子跟醇分子中的羟基结合成水,其余部分结合成酯。

    酯化反应必须采取边反应边脱水的操作才能将酯化反应进行到底。

    乙酸乙酯、乙酰氯、乙酸酐、乙酰胺中最活泼的酰化剂是乙酸乙酯。

    加氢反应催化剂的活性组分是( )。

    不同电解质对铁屑还原速率影响最大的是( )。

    下列加氢催化剂中在空气中会发生自燃的是( )。

    能将酮羰基还原成亚甲基(-ch2-)的还原剂为( )。

    可选择性还原多硝基化合物中一个硝基的还原剂是( )。

    能将羧基选择性还原成羟基的还原剂为( )。

    用作还原的铁粉,一般采用( )。

    能选择还原羧酸的优良试剂是( )。

    能将碳碳三键还原成双键的试剂是( )。

    下列化学试剂中属于还原剂是( )。

    用铁粉还原硝基化合物用( )作溶剂时,酰化物的含量可明显减少。

    下列物质中不能作为化学还原剂的是( )。

    下列哪些是重氮化的影响因素( )。

    关于铁屑还原,说法不正确的是( )。

    采用氢化铝锂(lialh4)对有机化合物进行化学还原时,下列物质中( )不能作为该反应的反应介质。

    液相加氢还原是气液固三相反应。

    重氮盐的水解宜采用盐酸和重氮盐酸盐。

    重氮化反应是放热反应,一般在5℃-10℃的低温下进行。

    亚硫酸钠具有还原性常被称为保险粉。

    lialh4只能还原羰基。

    工业生产上所用的还原铁粉一般采用50~60目的铁粉。

    所有非均相催化氢化均在催化剂表面进行。

    铁酸还原剂不需特殊的溶剂,操作简便易行,适用范围广,副反应少,对反应设备要求低。

    当芳环上有吸电子基团时,硝基、亚硝基、羟胺等含氮氧功能基容易被还原,还原温度较低。

    当芳环上有供电子基团时,这些含氮氧功能基不易被还原,反应温度较高。

    醇在钠、氢氧化钠、氢氧化钾等存在下,与卤代烃作用生成醚的反应称为( )。

    加布里尔(gabriel)反应是指( )。

    羟乙基化反应是指( )。

    使用相转移催化剂的有点是( )。

    相转移催化作用是指( )。

    下列物质中,能使酸性高锰酸钾褪色的是( )。

    过氧酸与酮的反应 (即羰基酯化)比烯的环氧化慢得多,可以在酮羰基存在下进行烯的环氧化。

    联苯甲酰的制备用fecl3.6h2o作氧化剂的优点是( )。

    反应生成的苯妥英钠直接与硫酸锌反应,有哪些优缺点?

    化学氧化法的优点是( )。

    下列化学试剂不属于氧化剂的是( ) 。

    下列四种物质中能发生氧化反应、还原反应和加成反应的是( ) 。

    利用氧化反应工业上主要用于生产( )产品。

    空气液相氧化中,可使用乙酸钴作催化剂制备的化合物是( )。

    醛酮缩合中常用的酸催化剂( )。

    不能发生羟醛缩合反应的是( )。

    由单体合成为相对分子质量较大的化合物的反应是( )。

    下列物质中既能被氧化,又能被还原,还能发生缩聚反应的是( ) 。

    芳香醛与( )在碱性催化剂作用下缩合,生成β-芳基丙烯酸类化合物的反应称为珀金反应。

    醛酮与羧酸及其衍生物的缩合包括( )。

    生产药物的天然微生物主要包括( )三大类。

    发酵培养技术包括( )。

    按操作方式和工艺流程可把发酵培养分为( )等。

    前体是加入到发酵培养基中的某些化合物,能被直接参与产物的生物合成,组成( )。

    在抗生素生物合成中,菌体用来构成抗生素分子而本身又没有显著改变的物质称为( )。

    工业生产中种子罐和发酵罐每隔( )取样一次。

    工业上实罐灭菌的时间一般为( )。

    所属分类:人卫慕课答案 浏览量: 69  次

    网站地图