下列实验操作现象和结论均正确的是 选项实验操作现象结论a用洁净铂丝蘸取溶液进行焰色反应火焰�黄色原溶液中有na 无k b将so2和 Template




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tomski下列实验操作现象和结论均正确的是 选项实验操作现象结论a用洁净铂丝蘸取溶液进行焰色反应火焰�黄色原溶液中有na 无k coloring