外圆槽面较窄时常用卡钳测量外径，卡钳的测量精度由测量者的手感_爱下问搜题

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问题单项选择题

外圆槽面较窄时常用卡钳测量外径，卡钳的测量精度由测量者的手感确定，一般可达（）mm。

A.0.002～0.008

B.0.015～0.0

C.0.03～0.05

答案

参考答案：B

选择题

The man _____ you are going to make friends is my father's neighbor. [ ]

A. with whom

B. when

C. to whom

D. which

选择题

He hasn't heard from his friend ______ last month. [ ]

A. since

B. by the end of

C. for

D. until