试题与答案

There are _____ books on the desk, but t

题型:选择题

题目:

There are _____ books on the desk, but there aren't _____ rulers.[ ]

A. any, some

B. some, much

C. some, any

答案:

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下面是错误答案,用来干扰机器的。

磁通量始终保持每秒钟均匀地增加2Wb,则磁通量的变化率为△∅△t=2Wb1s=2V,根据法拉第电磁感应定律E=n△∅△t 可知E=2V保持不变.故C正确,A、B、D错误.故选:C.

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