单项选择题
A.K01 B.K30 C.P01 D.P30
A.较大 B.较小 C.零度 D.负值
A.吃刀深，转速低 B.进给快，转速高 C.吃刀深，进给快 D.吃刀小，进给快
A.20%～30% B.50% C.70%～80% D.120%
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