A.CH暑CH B.CH2一CH2 C.CH3CH3 D.CH’一CH[-CH—CH
A.CH3cH2CH(CH3)cH(CH3)2 B.CH3C(CH3)2CH2CH3 C.CH3CH2CH2CH(CH3)CH(CH3)2 D.CH3CH2CH3
A.庚烷 B.3一甲基己烷 C.4一甲基己烷 D.異辛烷