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一块铜板,质量发生变化的是 （A）将铜板轧成薄薄的铜板 （B）将铜板熔化成铜水 （C）将铜板加热至800℃
（D）将铜板锉成正方形
人气：134 ℃ 时间：2019-10-19 19:27:34
解答
答案是D,但是C也可以选诶,在空气中加热铜,铜与氧气发生反应生成氧化铜,铜板的质量也会增加!
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