试题与答案

目前铣刀常用()制造。A.高速钢 B.低合金刃具钢 C.碳素工具钢 D.硬质合金

题型:单项选择题

题目:

目前铣刀常用()制造。

A.高速钢

B.低合金刃具钢

C.碳素工具钢

D.硬质合金

答案:

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