【題目】下列做法，不能起到防銹作用的是（ ）

A．保留鐵器表面的鐵銹

B．在鐵器表面鍍鋅

C．在金屬機械上涂油

D．在車、船表面刷漆

【答案】A

【解析】鐵生銹后，因鐵銹比較疏松，不能起到防止內(nèi)部進一步被銹蝕的作用．

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