1.speaking is considered as a productive skill and only involves producing information.
应用叠加定理时,关于受控源的叙述正确的是( )
本课程研究的图像是二维的,是三维景物在二维平面上的投影
人眼的视网膜上存在大量能在适当亮度下分辨颜色的杆状细胞。
how do you learn english pronunciation? are you familiar with the ipa (international phonetic alphabet)? if yes, do you think it is effective to learn english pronunciation by learning and practicing the sounds in the ipa?
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 ( )
rl串联的正弦电流电路,端电压与电流为关联参考方向,则其相位关系为( )
八方向链码07000065653434222的一阶差分码是
已知图像上的2个像素p,q的坐标分别为(26,15)和(20,23),则p和q之间欧式距离为:
what methods have been used in teaching speaking? what are their merits and demerits?
which of the following are effective listening strategies?
2. writing is not a physical act, but it is a mental act.