题目内容

直角沟槽只能在立式铣床上用立铣刀铣削。()

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麻花钻、扩孔钻和铰刀都不是标准刀具。()

车削时,工件端面与轴线的垂直度要求,取决于车床横溜板导轨与工件回转轴线的垂直度。()

Mr. White: __________, Tom. We are glad to have you. Now I ’m sure you ’re excited to be back home soon.
Tom: Oh, yes.

A. Don’t say that
B. It ’s very kind of you to say that
Come on
D. That’s all right

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