将铁丝插入硫酸铜溶液中能观察到的现象是a有大量气泡生成b溶液有蓝色变成黄色c铁丝表面覆盖一层红色物质d铁丝表面无变化——青夏教育精英 Template




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tomski将铁丝插入硫酸铜溶液中能观察到的现象是a有大量气泡生成b溶液有蓝色变成黄色c铁丝表面覆盖一层红色物质d铁丝表面无变化——青夏教育精英 coloring