题目内容

切屑的类型一般有四种,即、、粒状切屑和蹦碎切屑。

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CA6140普通车床的传动系统主要由、、螺纹车削传动链。

在车床上安装工件所用的附件有、、、花盘、心轴、中心架和跟刀架。

Choose the best answers.1. He asked me _____ told me about the accident.

A. whom
B. which
C. who
D. whose

It depends on _____ you look at it.

A. where
B. which
C. why
D. how

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