实验室制取干燥氧气，应采用的收集方法是_刷题宝

题干

实验室制取干燥氧气，应采用的收集方法是（）

A：排水法

B：向上排空气法

C：向下排空气法

D：以上方法都行

上一题下一题 0.0难度选择题更新时间:2018-11-08 07:34:43

答案(点此获取答案解析）

B

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