试题与答案

熔焊时,被熔化的母材在焊道中所占的百分比称为()。 A.焊缝成形系数 B.碳当量 C

题型:单项选择题

题目:

熔焊时,被熔化的母材在焊道中所占的百分比称为()。

A.焊缝成形系数

B.碳当量

C.熔合比

D.热输入

答案:

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参考答案:D

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