A.新戊烷 B.异戊烷 C.正己烷 D.正辛烷
A.CH3CH2CH2CH3与(CH3)2CH2CH3 B.CH3CH2CH2OH与CH3CHOHCH3 C.CH3CH2CHO与CH3CH=CHOH D.CH3CH2CH2OH与CH3CH2OCH3
A. 2个 B. 3个 C. 4个 D. 5个