题目内容
等质量的下列有机物耗氧量由大到小的顺序是
(1)C2H6
(2)C2H4
(3)C3H8
(4)C4H8
(5)C4H6
等质量的下列有机物耗氧量由大到小的顺序是________.(填写序号)
(1)C2H6 (2)C2H4 (3)C3H8 (4)C4H8 (5)C4H6
等质量的下列有机物耗氧量由大到小的顺序是__________________
(1)C2H6(2)C2H4(3)C3H8(4)聚乙烯(5)C4H6