连杆加工工艺过程的大部分工序所采用的定位精基准是( )。A．_爱下问搜题

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问题单项选择题

连杆加工工艺过程的大部分工序所采用的定位精基准是( )。

A．一个端面

B．两个孔

C．一面两孔

答案

参考答案：C

选择题

---- Have you heard that Tom, as well as his parents, _____ moved to Beijing?

---- Really? No _____ I haven’t seen him for a long time.

A．have; doubt

B．has; wonder

C．have; wonder

D．has; choice

判断题

向国际社会提供灾情，须经民政部批准。