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【单选题】
驱动电路是电力电子器件主电路与哪种电路之间的接口( ) 驱动电路是电力电子器件主电路与哪种电路之间的接口 ( C )A.
缓冲电路
B.
控制电路
C.
保护电路
D.
滤波电路
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反馈参考答案：
举一反三
【简答题】by a____ in a way that is not planned or intended 偶然;意外地
【单选题】What's the impact of the line going down?
A.
The system is in good condition.
B.
It puts extra stress on the system to pick up that line.
C.
The whole system will go down.
D.
The other lines will be OK.
【简答题】请阅读课文第3段,从中找出一下汉语的英语表达。 1.做某事感到惊讶 2.对...小心谨慎 3.很会说话 4.偶然,意外地 5.假装做... para.3 Riding on his bicycle, he'd ride past my dorm as if "by accident" and pretend to be surprised to see me. ...
【单选题】听力原文：W: We'd better be looking for sales on down jackets and underwear. It's going to be really cold this winter. M: Well, you didn't expect it to be warm, did you? W: Of course not, but I just heard ...
A.
How much its accuracy has improved recently.
B.
How reliable long-range forecasts are.
C.
How difficult it takes to make a good forecast.
D.
How the current forecast causes troubles.
【单选题】With the crop’s production _____ rapidly, food price is _____ year by year.
A.
go up; going down
B.
going up; go down
C.
going down; going up
D.
going down; go up
【单选题】听力原文：Woman: Is this elevator going up or down? Man: It's going up. What floor would you like, please? Woman: I need the furniture department on floor 7. And hurry. There's a great sale there today, an...
A.
By the door.
B.
In an elevator.
C.
In the woman's apartment.
D.
In the furniture department.
【单选题】Although many measures _____, the world’s economy is still going down.
A.
are taken
B.
were taken
C.
will be taken
D.
have been taken
【单选题】Although many measures ______,the world’s economy is still going down.
A.
were taken
B.
have been taken
C.
will be taken
D.
are taken
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