某合作小组讨论辨析以下说法不正确的是A.粗盐和酸雨都是混和物 

某合作小组讨论辨析以下说法不正确的是

A.粗盐和酸雨都是混和物                     B.沼气和水煤气都是可再生能源

C.不锈钢和目前流通的硬币都是合金           D.豆浆和雾都是胶体

 

答案

B

解析:

 

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