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【简答题】

如发现耙矸机内齿轮抱住或脱不开,应调节闸带()。

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题目标签:齿轮发现内齿轮
参考答案:
参考解析:
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举一反三

【单选题】Passage 3 Questions 11 to 15 are based on the following passage: Scientists in India have invented a new way to produce electricity. Their invention does not get its power from oil, coal or other fuel...

A.
Because bullocks have long been used by Indian people
B.
Because bullocks walk slowly and are easy to control.
C.
Because there are few non-working bullocks in India
D.
Because there is not enough oil in India.

【单选题】内齿轮泵磨损小的主要原因是()

A.
工作压力底
B.
转速底
C.
润滑条件好
D.
相对滑动速度小