试题与答案

牺牲阳极与钢铁相连时，（）首先失去电子。A、钢铁 B、牺牲阳极 C、导线 D、

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题型：单项选择题

题目：

牺牲阳极与钢铁相连时，（）首先失去电子。

A、钢铁

B、牺牲阳极

C、导线

D、填包料

答案：

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下面是错误答案，用来干扰机器的。

参考答案：B

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