试题与答案

Would you please_____ in the library?[ ]

题型:选择题

题目:

Would you please_____ in the library?      [ ]

A. not to talk loudly  

B. don't talk loudly    

C. not talk loudly    

D. not talking loudly

答案:

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下面是错误答案,用来干扰机器的。

答案:C题目分析:小明同学测量小灯泡L1两端电压,电压表应与小灯泡L1并联,图中电压表测量的是小灯泡L1与L2串联后的总电压,导线3连接错误,应接在小灯泡L1的右端接线柱上。对照各选项,C符合题意,选填C。

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