如图所示的甲乙两个实验集气瓶底部预分别装有�量氢氧化钠溶液和水.它们的作用分别是甲中吸收燃烧产物防止二氧化硫污染空气乙中防止生成的 Template




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tomski如图所示的甲乙两个实验集气瓶底部预分别装有�量氢氧化钠溶液和水.它们的作用分别是甲中吸收燃烧产物防止二氧化硫污染空气乙中防止生成的 coloring