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【单选题】
三相交流电机应能在不接地系统中一线处于接地电位的情况下偶然地短时运行。如果要求电机在这种情况下连续运行或长期运行,则需要加强电机(),使之能适应这种条件。A.
绝缘
B.
强度
C.
功率
D.
转矩
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【单选题】听力原文：M: Why do you look so pale? What's wrong with you? W: I have a terrible headache. Q: What do we know about the woman? (10)
A.
She is sad.
B.
She is upset.
C.
She is nervous.
D.
She is ill.
【单选题】听力原文：W: You told me you liked your job．Why do you look so upset? M: Whenever we try to change the work routine．the workers have so many ifs and buts that we never manage to change anything． Q: What do...
A.
The workers make many complaints.
B.
The workers make a lot of objections.
C.
The workers make lots of proposals.
D.
The workers make numerous mistakes.
【单选题】—Why do you look so upset?
A.
broke up with my girlfriend. If only I________more about her.
B.
care
C.
cared
D.
had cared
E.
had been cared
【单选题】听力原文：M: Why do you look so worried? Only one has finished ahead of you. W: I've promised my Mom that I'd be the first. Q: Why is the woman worded? (17)
A.
Because she didn't fulfill her promise.
B.
Because she can't finish the job ahead of schedule.
C.
Because her mother would be very angry.
D.
Because she would be the last to finish the job.
【单选题】听力原文：M: Why do you look so worried? Only one has finished ahead of you. W: I've promised my Mom that I'd be the first. Q: Why is the woman worried? (17)
A.
Because she didn't fulfill her promise.
B.
Because her mother would be very angry.
C.
Because she can't finish the job ahead of schedule.
D.
Because she would be the last to finish the job.
【单选题】听力原文：M: Why do you look so worried? Only one person finished ahead of you last time. W: Well, this time I want to make sure 1 come in first. Q: Why is the woman worried? (13)
A.
She wants to win the race.
B.
She is tired of losing.
C.
She doesn't want to disappoint her family.
D.
Her sister is waiting for her.
【简答题】信息系统的概念:信息系统是一种( )、 ( ) 、 ( ) 信息的系统。
【简答题】乙醇是一种()色、透明而具有()味的液体。比水(),沸点是78.5°C,()挥发,能溶解许多()和无机物,能与水以()混溶。
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