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【多选题】

范成法切割齿轮时所用的刀具具有()三种

A.
齿轮插刀
B.
齿条插刀
C.
圆盘铣刀
D.
滚刀
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题目标签:切割齿轮范成法
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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】范成法加工齿轮,滚刀和轮坯的工作关系本质是()?

A.
齿条和齿条啮合
B.
齿条和齿轮啮合
C.
齿轮和齿轮啮合