交流伺服电动机的鼠笼转子导体电阻（）。A、与三相鼠笼式异步电_爱下问搜题

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问题单项选择题

交流伺服电动机的鼠笼转子导体电阻（）。

A、与三相鼠笼式异步电动机一样

B、比三相鼠笼式异步电动机大

C、比三相鼠笼式异步电动机小

D、无特殊要求

答案

参考答案：B

完形填空

完形填空。

     Now many students haven't got    1    classes    2    Saturday or Sunday. What do they often do?
They have got their   3 . Some would like to go shopping     4    their parents. Some would like    5    at
home. They do their homework. They    6    TV    7    play computer games.    8    would like to play
football or basketball. Others (其他的) would like to    9    their relatives(亲属). They all have   10
good time on Saturday and Sunday.

( )1. A. a
( )2. A. in
( )3. A. time
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( )6. A. see
( )7. A. and
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( )10. A. a

B. an
B. at
B. plans
B. to
B. stay
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B. or
B. He
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B. an

C. some
C. on
C. places
C. at
C. staying
C. read
C. but
C. We
C. visit
C. the

D. any
D. of
D. idea
D. with
D. stays
D. watch
D. so
D. She
D. watch
D. /

填空题

重垂线在静止时总保持竖直下垂，这是由于重锤受到方向的力的作用．