侯英超 | 发布日期:2010-05-02 13:47:16
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下列有关物质的检验,说法正确的是 A.用碘酒检验淀粉,因为酒精使淀粉变蓝色 B.用稀盐酸检验碳酸盐,因为碳酸盐遇酸会生成气体 C.用无色酚酞试液检验碱性溶液,因为酚酞试液遇碱性溶液显红色 D.用澄清石灰水检验CO2,因为CO2能使澄清石灰水变浑浊 |