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乙烷与空气混合的爆炸下限，下列浓度正确的是（）

A、138.0

B、0.023799999999999998

C、0.0338

D、0.0538

时间：2021-07-17 23:35 关键词：安全工程专升本火灾爆炸安全工程学 2019级毕业清考（考试分）

答案解析

C

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