金属结构装配中常用的夹具按夹紧力的来源可分为（）夹紧、（）夹

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问题填空题

金属结构装配中常用的夹具按夹紧力的来源可分为（）夹紧、（）夹紧两大类。

答案

参考答案：手动；机动

选择题

We all suggest that she _____ at the weekend, because her pale face suggests that she _____ in bad condition.

A．does not work; is

B．cannot work; was

C．not worked; was

D．not work; is

填空题

调制解调器的串口速率是指调制解调器上【】接口的数据传输速率。