[题目]下列做法.不能起到防锈作用的是( )A．保留铁器表面的铁锈B．在铁器表面镀锌C．在金属机械上涂油D．在车.船表面刷漆题目和参考答案——青夏教育精英家教网—

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【题目】下列做法，不能起到防锈作用的是（）

A．保留铁器表面的铁锈

B．在铁器表面镀锌

C．在金属机械上涂油

D．在车、船表面刷漆

【答案】A

【解析】铁生锈后，因铁锈比较疏松，不能起到防止内部进一步被锈蚀的作用．

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