题目内容

Question 3[音频]

A. He will apologize to his roommate.
B. He will give the bicycle back right now.
C. He will give a call to the woman tonight.
D. He will play computer games with his roommate.

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Question 4[音频]

A. Having a happy family.
B. Planning a reunion party.
C. Looking for exciting jobs.
D. Meeting former classmates.

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Question 5[音频]

A. He totally understands the woman'ssituation.
B. He feels very sorry for the woman'sroommate.
C. The woman shouldn't keep pets in her dormitory.
D. The woman shouldn't quarrel with her roommate.

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直流电机启动时启动电流过大会导致

A. 电枢绕阻短路
B. 烧坏电机绕组
C. 启动转矩过大损坏机械传动部件
D. 电机转速超过理想空载转速

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直流电机的启动办法有

A. 电枢回路串入电阻启动
B. 直接启动
C. 降低电枢电压启动
D. 增大磁通量启动

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Question 3[音频]

A. He will apologize to his roommate. B. He will give the bicycle back right now. C. He will give a call to the woman tonight. D. He will play computer games with his roommate.

Question 4[音频]

Question 5[音频]

直流电机启动时启动电流过大会导致

直流电机的启动办法有

A. He will apologize to his roommate.
B. He will give the bicycle back right now.
C. He will give a call to the woman tonight.
D. He will play computer games with his roommate.