试题与答案

丙烯与某气态烃组成的混合气完全燃烧时,所需氧气的体积是混合气体体积的5倍(相同状

题型:选择题

题目:

丙烯与某气态烃组成的混合气完全燃烧时,所需氧气的体积是混合气体体积的5倍(相同状况),则该气态烃是(  )

A.C4H8

B.C3H4

C.C2H6

D.C2H4

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:酒精本身不具有致癌作用,但可加强其他致癌物的作用,有利于将致癌物转运到其作用靶部位而间接致癌。

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