为了检验co2中是否混有氢气和一氧化碳某同学设计如下实验装置 � 装置a的作用是 装置b的作用是 � 如果原气体中混有氢气则——青 Template




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tomski为了检验co2中是否混有氢气和一氧化碳某同学设计如下实验装置 � 装置a的作用是 coloring