试题与答案

“V”形铁主要用来安放轴,以便画出()线。A.中心 B.边缘 C.直角 D.母

题型:单项选择题

题目:

“V”形铁主要用来安放轴,以便画出()线。

A.中心

B.边缘

C.直角

D.母

答案:

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参考答案:压力表;真空表;压力真空表;外壳直径;表亮

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