氢气,氯气,氧气
A汞蒸气B水蒸气C碘蒸气D酒精蒸汽
选出和上面三种同一类的物质,并说明理由
人气：417 ℃ 时间：2020-01-24 10:15:14
解答
选C,因为它们都是非金属单质；或选AC,因为它们都是单质：看你的题是单选还是多选
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