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问题 判断题

由于钳形电流表是由电流互感器和电流表组成，为保证电流互感器能正常工作，钳形电流表多用于测量交流电流的大小。（）

答案

参考答案：对

选择题
— Where _____ the recorder? I can't see it anywhere. 
— I _____ it right here. But now it's gone!

A. did you put; have put
B. have you put; put
C. had you put; was putting
D. were you putting; have put
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单项选择题

以下各项，哪一项在肱骨干骨折时较少出现（）。

A.常伴有桡神经损伤

B.断端间易有软组织嵌入

C.易出现分离移位

D.中下段骨折有损伤肱动脉之可能

E.中上1／3骨折常可不愈合
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