下列区分物质的方法中不正确的是a.硬水与软水用肥皂水观察泡沫的多�b.石灰水与碳酸钠溶液滴加酚酞溶液看是否变色c.氧气与二氧化碳用带 Template




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tomski下列区分物质的方法中不正确的是a.硬水与软水用肥皂水观察泡沫的多�b.石灰水与碳酸钠溶液滴加酚酞溶液看是否变色c.氧气与二氧化碳用带 coloring