問題補充:多選題下列各組物質(zhì)中,屬于同分異構體的是?
A.O2和O3
B.CH2=CHCH2CH3和CH3CH=CHCH3
C.CH3CH2OH和CH3OCH3
D.CH3CH2CH3和CH3(CH2)2CH3
答案:BC
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