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【填空题】

软齿面齿轮的齿厚磨损为原齿厚的()。

题目标签:磨损齿轮齿厚
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参考解析:
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刷刷题刷刷变学霸
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】电器触头的主要磨损是()。

A.
机械磨损
B.
化学磨损
C.
电磨损
D.
磨料磨损

【单选题】气缸磨损的特点是

A.
上小下大,圆形磨损
B.
上小下大,锥形磨损
C.
上大下小,锥形磨损
D.
上大下小,圆形磨损

【多选题】刀具磨损的主要原因有( )

A.
磨粒磨损
B.
粘结磨损
C.
扩散磨损
D.
相变磨损