空气中含量较多且性质比较活泼的气体是 A．氧气B．氮气C．二氧化

空气中含量较多且性质比较活泼的气体是

A．氧气

B．氮气

C．二氧化碳

D．水蒸气

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空气中含量较多且性质比较活泼的气体是 A．氧气B．氮气C．二氧化

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