从运动角度讲，机构是具有确定相对运动构件的组合。
A. 对
B. 错
一台机器，不管多么复杂，其传动部分拆开后是由1个或者多个机构组成的。
A. 对
B. 错
–Hello, may I make an appointment with the doctor?–( )
A. Sorry, he is busy at the moment.
B. Why didn’t you call earlier?
Certainly. May I know your name?
D. Sorry. He doesn’t want to see you.
– How about going to see a film together this evening? Let’s make it 6:30 at your place?– ( )
A. Yes, it does me good.
B. OK, I’ll be ready.
C. I’d like that very much.
D. What’s the best time to meet?
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