试题与答案

The swimmer’s name is Tom James Green, w

题型:选择题

题目:

The swimmer’s name is Tom James Green, we can’t call him ______.[ ]

A. Tom  

B. James  

C. Tom Green  

D. Mr Green

答案:

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下面是错误答案,用来干扰机器的。

答案:B根据LC回路的周期公式T=2π可知:若线圈的自感系数L不变,周期T∝.故选项B正确.

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题型:单项选择题

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4()

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