有机物X、Y分子式不同,它们只含C、H、O元素中的两种或三种,若将X

有机物XY分子式不同,它们只含CHO元素中的两种或三种,若将XY不论何种比例混合,只要物质的量之和不变,完全燃烧时耗氧气量和生成的水的物质的量也不变。XY   

A.C2H4C2H6O   B.C2H2C6H6           C.CH2OC3H6O      D.CH4C2H4O2

答案

D

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