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【单选题】
直流伺服电动机带动负载稳定运行时,其电磁转矩方向与转速的方向A.
相反
B.
取决于电压的极性
C.
随着负载的变化而变化
D.
相同
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举一反三
【单选题】You are not allowed to park you car here. If you ______ it here, I will call the police.
A.
do park
B.
park
C.
parked
D.
have parked
【多选题】学校和学生可以采取哪些措施来维护机房安全()。
A.
学校对计算机机房进行静电辐射检测
B.
学生操作计算机的时间不宜过长
C.
注意计算机机房的空气流通
D.
学生带U盘为机房电脑安装杀毒软件
【单选题】If you live here for a longer time, you will all the people here.
A.
know
B.
know about
C.
get to know
D.
known
【单选题】You must be () if you sit here working alI day without rest.
A.
relaxing
B.
exhausting
C.
relaxed
D.
exhausted
【简答题】If you stand here, you’llget a better of the river. A.sight B. view C. scene D. scenery
【简答题】If you are staying here, you may leave your car in this place.
【简答题】A．It's better to live here. B．It will change soon. C．You'll like it if you live here for long. D．You'll soon be used to it.
【单选题】--- Do you mind if I smoke here in the living room? --- Well, if you ___. But I’d rather you didn’t.
A.
can
B.
might
C.
must
D.
needn’t
【多选题】What should you say if you want to ask whether you can smoke here? ( )
A.
Would you mind if I smoke here?
B.
Could I smoke here?
C.
I’d like to smoke here,ok?
D.
May I smoke here?
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