( )定心性能好，装拆方便。A．平键 B．楔键 C．切向键 D．花键_爱下问搜题

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问题单项选择题

( )定心性能好，装拆方便。

A．平键

B．楔键

C．切向键

D．花键

答案

参考答案：A

选择题

Could you please tell me ______? I want to see him right now. [ ]

A. where does Jim live

B. where did Jim live

C. where Jim lived

D. where Jim lives

问答题简答题

CGL焊机的焊接形式、焊接厚度、焊接宽度分别是什么或多少？