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【单选题】
马赫配平系统()A.
控制方向舵
B.
必须与自动驾驶仪连同工作
C.
马赫配平系统可以保证飞机的纵向稳定性
D.
与速度配平系统同时工作
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【单选题】听力原文：M：I am told that there is something wrong with your video camera? Let me see what's the matter. W: Oh, I went to the shop and had them replace it with a new one yesterday afternoon. What did the ...
A.
She went to the shop.
B.
She returned it to the shop.
C.
She had it changed.
D.
She replaced it with a new one.
【简答题】What are the six M's mentioned in the video?
【单选题】听力原文：M: What did you think about the video we were supposed to watch for Professor Stephen' s class? W: I didn't see it. Was it good? M: Really it was. It was about stress, the effects of stress on th...
A.
It is required by Professor Stephen.
B.
It is very interesting.
C.
He wants to know about heart attacks.
D.
He took part in the discussion.
【简答题】某用电器接在220伏的电路中,通过的电流为0.5安 通电两小时 消耗电能多少度?
【单选题】What is wrong with the video recorder?
A.
It was slightly damaged.
B.
It destroys video tapes.
C.
Its compartment is broken.
D.
It produces unclear visions.
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