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【判断题】
一台 4极三相电动机,接在50Hz的三相交流电源上,其旋转磁场的转速为1500转/分。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】Short Conversation4. ( )A. This is a good idea.. B. It depends on the weather C. Having a picnic in the open fits the weather D. He doesn’t like a picnic
【简答题】简述企业的总产出是如何分配的
【单选题】Conversation One 4.
A.
. It gets dirty.
B.
It gets old.
C.
It is too repetitive
D.
It is mentally tiring
【单选题】Conversation Four
A.
Visit a zoo.
B.
Apply for a job.
C.
Work as a volunteer.
D.
Talk with the manager.
【单选题】(conversation 1) 4.
A.
To have an unfortunate marriage.
B.
To be envious of other people.
C.
To praise a spouse unexpectedly.
D.
To say something negative about a spouse.
【单选题】Short Conversation 4. ( )
A.
This is a good idea..
B.
It depends on the weather
C.
Having a picnic in the open fits the weather
D.
He doesn’t like a picnic
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