下列对合金的说法正确的是_刷题宝

题干

下列对合金的说法正确的是（　　）

A：合金中至少含有两种金属元素

B：黄铜的硬度比铜大

C：18K金常用来制作饰品，其熔点比纯金高

D：钢是纯铁的俗称

上一题下一题 0.0难度选择题更新时间:2018-10-10 09:46:51

答案(点此获取答案解析）

B

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