题目内容

常见的齿轮传动有、锥齿轮啮合和涡轮蜗杆啮合。

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模数与齿轮的承载能力无关。

A. 对
B. 错

There are three main character in the story: the narrator, Rob and Lilly.

A. 对
B. 错

In the begining of the story, Rob gives narrator his girlfriend in exchange for a leather jacket.

A. 对
B. 错

Match the words with its English meanings.

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