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【简答题】
某一齿条传动机构中，与齿条啮合的齿轮齿数Z＝40，模数M＝2mm，试当齿轮转2转时，齿条的移动距离是多少？解：∵节∴
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反馈参考答案：
举一反三
【单选题】What a pity! I missed meeting my boss at the airport because my car on the way..
A.
broke up
B.
broke into
C.
broke out
D.
broke down
【单选题】—Dear, you water the garden and I do the cooking．
A.
Why me?
B.
Forget it．
C.
No way．
D.
Ok, that's settled．
【简答题】Make a similar dialogue according to the situation and the functional sentences below. Situation: A and B went to the bookstore last Sunday. Now, they are sharing their ideas about the fairy tales. Fu...
【单选题】I don't know the way. Let's go and _____the policeman. [ ]
A.
have
B.
find
C.
come
D.
ask
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