鉴别空气、氮气、氧气三瓶气体的最佳方法是( ) A、测量三瓶

鉴别空气、氮气、氧气三瓶气体的最佳方法是( )

A、测量三瓶气体的密度 B、用燃着木条分别伸入三瓶气体中

C、测量三瓶气体的溶解性 D、用带火星的木条分别伸入三瓶气体中

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鉴别空气、氮气、氧气三瓶气体的最佳方法是( ) A、测量三瓶

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