2023-05-23
水利水电枢纽工程按其（）为五等。
A.规模
B.作用
C.效益
D.在国民经济中的重要性
E.投资
ABC
There is an obvious conclusion in this article which clearly tells us the importance of psychological needs.
2024-01-13 竞赛及其他题库
“When someone uses his power to help downtrodden people satisfy any of their needs， especially to get some power， this use of power is humane.” In this sentence， the underlined word “humane” means（）.
What might not be believed by the author？
Self-actualization needs；refer to realizing personal potential， self-fulfillment， seeking personal growth and peak experiences.They indicate a desire to become everything one is capable of becoming.So which of the following is a good example to manifest t
反应速率r可为正值也可为负值。
反应级数等于反应分子数。
反应A+B→C+D的速率方程r=k[A][B],则反应是二级反应，不一定是二分子反应。
关于阈能，下列说法中正确的是（）
根据碰撞理论，温度增加反应速率提高的主要原因是：（）
由气体碰撞理论可知，分子碰撞次数（）
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