如图装置为铜跟浓硫酸反应制取二氧化硫的实验装置请回答下列问题1检验此装置ab部分气密性的操作方法和现象是 .2在装置a中放 Template




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tomski如图装置为铜跟浓硫酸反应制取二氧化硫的实验装置请回答下列问题1检验此装置ab部分气密性的操作方法和现象是 .2在装置a中放 coloring