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    产生均数有抽样误差的根本原因是()。

    四格表中,当a=20,b=60,c=15,d=5时,最小的理论频数等于t21。()

    在一个总体中某一个或某范围结果出现的可能性称为______。频率用符号______表示。

    可能影响试验结果的因素分为处理因素和______因素。服药后病好了,则“病好了”这个结果可能是药导致的(药有效)、______药导致的(药无效)。

    眼的屈光物质不包括

    听觉感受器

    在亚共析钢中,随着含碳量的增加,组织中珠光体的含量增多。

    大脑半球的叶间沟包括

    【单选题】学会提问的一条捷径是什么?

    2021年实现载人登月 是命题

    教育问题上升为教育政策问题最关键的是()。

    防止焊工发生触电事故的安全措施应有良好的隔离防护和良好绝缘,还应有:

    当作出“差异_____”的结论时可能犯i型错误,犯错误的概率用______表示。

    在滴加kmno4溶液前,一定要将溶液的ph调至碱性。

    古代许多医生因为在实践中观察到患者服用某草药后痊愈了、于是得出了经验:该草药有效。由于未确定患者______是否也可能______,这样的医学经验实际上______可靠。

    the first step in preparing a report is to sit down and begin writing immediately; this technique allows you to capture your best ideas quickly.

    平总在纪念改革开放40周年大会讲话中谈到的五四运动以来我国发生的三大历史性事件是指( )。

    名词解释:首因效应

    what statement best describes the summary of qualifications portion of a résumé?

    which of the following statements about businesses' use of facebook and other social networking sites is most accurate?

    指导-合作模式是一种最简单的单向性,以生物医学模式及疾病的护理为主导思想的护患关系模式。()

    in writing a letter of reference, you should do the following except

    choose the best closing sentence for a cover letter.

    试述使用沉默技巧的意义?

    a job opening has been announced. which of these answer choices will be the best opening sentence in an application letter?

    as an applicant, you’d better not to provide the referee your updated information, because you don’t want to influence how the referee writes.

    登月用宇宙飞船上的天线是用镍-钛合金丝做成的,它是一种形状记忆合金。

    which of the following is most likely to be written as an informative report?

    isabel is responding to a congratulatory note she received from a colleague. which of the following is the best sentence to include in her response?

    brittany is writing a business report about protecting workplace data and will be conducting an interview with a data security expert. what is the best advice you can give her?

    按期权持有者的交易目的,可分为( )。 a.买入期权 b.卖出期权 c.欧式期权 d.美式期权

    如图所示圆形截面图形的形心为c,直径为d,则图形对y轴的惯性矩,正确的位下面中的哪一项( ).

    声调是一种相对绝对音高现象。

    常规三轴剪切试验通常是指σ1>σ2=σ3的受压情况。

    土颗粒的大小及其级配,通常是用粒径级配曲线表示的,若某土样的粒径级配曲线越平缓,则说明( )

    根据基础是否有埋深,基础底面的附加压力p0()总基底压力p。

    甲肝传染源包括

    z所对应的p值指的是“z-无穷大”之间的面积。

    化肥的生产需要石油里面的( )元素。

    任天堂公司推出的游戏机有哪些?

    某一土层,其先期固结应力300kpa,现在所受的固结应力为200kpa,则其固结状态为正常固结状态。

    图示简支梁ab上的集中力p可在梁上任意移动,设其弯曲正应力强度条件为,m/w≤[σ],则其中( ).

    土体加荷发生压缩变形后再卸荷回弹,有一部分变形不能恢复,把不能恢复的变形就称为弹性变形。

    在下列算法中得到的解未必正确的是()。

    相同的利率水平下,计息频率越高,得到的终值就越大。

    点缺陷包括()。

    镁合金的密度小于铝合金

    甲、乙都是某建筑工地分包商技术负责人。乙的现场办公用房使用电炉着火,甲为防止乙的 火蔓延而去扑火,结果被烧伤,花去医疗,费1000元,则以下叙述正确的是 ( ) 。

    表面淬火改变了基体金属表面化学成分

    由选民通过两次选举,分别产生各自独立对选民负责的议决机关和执行机关,这种体制称为()。

    低碳钢的锻压性比高碳钢的锻压性好

    在进行设计洪水成果合理性分析时,将1d、3d、7d洪量系列的频率曲线画在同一张频率格纸上,它们应()。

    应用叠加定理时,关于受控源的叙述正确的是( )

    4个并口中没有第二功能的是

    mcs-51单片机串行通信时,先发送低位,后发送高位

    对程序存储器的读操作,需要使用()指令

    对于具有n个节点b条支路的电路,可列写的独立的kcl方程个数为 ( )

    铸锭可由三个不同外形的晶粒区所组成,最外层为()。

    热喷涂涂层的性能具有方向性

    评标委员会应当否决投标的情形有( )。

    元音“a”的f1最高,是因为发“a”的时候舌位最高

    局部视图中的波浪线画在机件的()。

    2019年3月15日,由消费者协会主办、网协办的“2019年3•15国际消费者权益日主题活动”在日报社网举行,活动主题为( ),这是中消协提出的2019年消费年主题。

    经营者不得以()等方式作出对消费者不公平、不合理的规定。

    如何合理利用记忆的规律,加强记忆力?

    平面立体的截交线的()是截平面与棱面的交线。

    使用单一k线时,可依据( )对多空双方力量进行衡量

    氨水的浓度越小,解离度越大,溶液中的oh-浓度一定也越大。

    试述动物病毒增殖过程的特点。

    利息费用属于()成本。

    需要连续性假定成立的物流成本预测方法是()。

    为系统推进华北地区地下水超采治理,我国将采取( )综合治理措施。

    电极电势越小的电对的还原型,其还原性越强,是更强的还原剂。

    双壳类如何定向?

    偿债备付率是指项目在借款偿还期内各年用于还本付息的资金与档期应还本付息金额的比率。()

    financial management should just focus on the tangible annual income and profit.

    business is all about tricks, win-lose deals, and dishonesty.

    in addition to conducting market ysis and competitive ysis, and also looking at the industry and government, there are some other risks that entrepreneurs should take into account.

    venture capital is one of the popular forms of debt financing used to finance high-risk, high-return businesses.

    an organization’s marketing and selling activities should be carried out under a well-thought-out philosophy of efficiency, effectiveness, and socially responsibility, which is just the concept of marketing.

    there is one structure, set of systems, or method of staffing that is appropriate for all organizations.

    the values of a corporate culture can only influence the top managers' behaviors.

    before you register a business name and get your license, you'd better check with the local administration of industry and commerce to make sure the name you chose is not already taken.

    at the very top of maslow's hierarchy of five needs is our human need for “safety”.

    employees within a functional department of an organization tend to perform a specialized set of tasks, for instance, the engineering department would be staffed only with engineers.

    the objective of corporate social responsibility is to encourage actions that promote activities that have a positive impact on employees, stakeholders, clients and the environment.

    1835年,( )发明了第一台电报机。

    the marketing mix is the set of ideas that the firms have in doing its marketing.

    the debt financing can be a secured loan which requires guarantees by your property, or an unsecured loan which only requires your reputation.

    compared to joint ventures and direct investment, exporting consists of the least risk for a company which wants to enter the international market.

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