下列关于实验现象的描述正确的是 A.铁丝在氧气中燃烧生成四氧化三铁b.二氧化碳通入紫色石蕊溶液中溶液变为蓝色c.打开盛有浓盐酸的试剂瓶的 Template




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tomski下列关于实验现象的描述正确的是 a.铁丝在氧气中燃烧生成四氧化三铁b.二氧化碳通入紫色石蕊溶液中溶液变为蓝色c.打开盛有浓盐酸的试剂瓶的 coloring