在相同条件下，燃烧时对大气污染程度最小的是（） A.液化气

在相同条件下，燃烧时对大气污染程度最小的是（）

A.液化气 B.煤油 C.煤饼 D.木柴

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在相同条件下，燃烧时对大气污染程度最小的是（ ） A.液化气

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在相同条件下，燃烧时对大气污染程度最小的是（） A.液化气