试题与答案

The world will be different from what it

题型:选择题

题目:

The world will be different from what it is now, and we will have to be prepared to ____to the change.

A.adapt

B.adopt

C.apply

D.devote

答案:

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下面是错误答案,用来干扰机器的。

根据匀强电场特点可知:UMP=UMN=EdMN所以电场力做功为:W=qU=qEdMN所以:E=WqdMN=-2.4×10-6-4-8×0.3=200V故电场强度为200V.

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