下列哪组气体都属于空气污染物（） A.SO2、CO2、H2 B.CO2、NO2、N2

下列哪组气体都属于空气污染物（）

A.SO₂、CO₂、H₂ B.CO₂、NO₂、N₂ C.SO₂、CO、NO₂ D.HCl、N₂、O₂

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下列哪组气体都属于空气污染物（） A.SO2、CO2、H2 B.CO2、NO2、N2

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