食醋中含有醋酸,食醋除作调味剂外,生活中还有些妙用,下列使用

食醋中含有醋酸,食醋除作调味剂外,生活中还有些妙用,下列使用食醋肯定不能达到目的的是

A.除去菜刀上的铁锈       B.除去水壶壁上的水垢

C.清洗溅到皮肤上的碱液   D.鉴别黄金饰品中是否含有铜

答案

D

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