试题与答案

微束等离子弧焊,应采用具有()外特性的电源。A.上升 B.陡降 C.缓降 D.垂直陡

题型:单项选择题

题目:

微束等离子弧焊,应采用具有()外特性的电源。

A.上升

B.陡降

C.缓降

D.垂直陡降

答案:

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