选择题:某工业城市,某年夏天的几天时间里,光照强烈,空气出现了浅蓝色的烟雾,具有较强的刺激性。该市的交通流量并不大。该烟雾的主要来源可能是(  )。

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题目内容:

某工业城市,某年夏天的几天时间里,光照强烈,空气出现了浅蓝色的烟雾,具有较强的刺激性。该市的交通流量并不大。

该烟雾的主要来源可能是(  )。

A.汽车尾气

B.民用燃煤

C.石化企业

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A.条件(1)充分,但条件(2)不充分。

A.条件(1)充分,但条件(2)不充分。

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