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一根均匀米尺,在60cm刻度处被钉到墙上,且可以在竖直平面内自由转动。先用手使米尺保持水平,然后释放。求刚释

放时米尺的角加速度和米尺到竖直位置时的角速度各是多大?
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第1题

We've asked the neighbors to______the house for us while we are away.A.have an eye toB.kee

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A.have an eye to

B.keep an eye on

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第2题

We've asked the neighbors to______the house for us while we are away.A.have an eye toB.kee

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第3题

Which of the following words can NOT be used to complete "We've seen the film______"?A.bef

Which of the following words can NOT be used to complete "We've seen the film______"?

A.before

B.recently

C.lately

D.yet

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第4题

听力原文:W: I don't believe we've ever met before, have we?M: We've been introduced at oth

听力原文:W: I don't believe we've ever met before, have we?

M: We've been introduced at other parties. Don't you remember?

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(16)

A.They've met before.

B.He does not remember her.

C.She should agree with him.

D.They have never met before.

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第5题

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M: We've been introduced at other parties. Don't you remember?

Q: What does the man imply?

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第6题

Which of the following words can NOT be used to complete "We've seen the film______"?A.bef

Which of the following words can NOT be used to complete "We've seen the film______"?

A.before

B.recently

C.lately

D.yet

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第7题

- You’ve never done this before, right?- No, but if we follow the directions, we ____

A.A.shouldn’t

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