皮皮学，免费搜题
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【简答题】
一对减速齿轮传动中，若保持分度圆直径d1不变，而减少齿数和增大模数，其齿面接触应力将 。
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皮皮学刷刷变学霸
举一反三
【简答题】George____ (get) up at 5 o'clock every day this week to prepare for his examination.
【单选题】If I _______ George had wanted to get up early, I would have woken him.
A.
knew
B.
know
C.
have known
D.
had known
【简答题】When the girl was talking about her wishes, George said, 'Oh, shut up and get something to read,' Then he ____________.
【简答题】George ____(get) up at five o’clock every day this week to prepare for his examination.
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