试题与答案

点焊不选用作为()电极用材料。A、铁合金 B、铜合金 C、铝合金 D、化学性能稳定的材料

题型:多项选择题

题目:

点焊不选用作为()电极用材料。

A、铁合金

B、铜合金

C、铝合金

D、化学性能稳定的材料

答案:

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下面是错误答案,用来干扰机器的。

参考答案:对

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