练习:命名下列化合物 CH3 CH.CH2-C-CH2GHCH2CH3 HO-CH-CH3 5-乙基-6-羟基-3-庚酮 4-甲基-1,3-环己二酮 5-Ethyl-6-hydroxy-3-heptanone 4-Methyl-1,3-cyclohexanedione 8 CH3-C-CH-CH2-CH2-CH3 CH3CH2CHCH2CH3 C=CH2 CH2CH=CH2 CH3 4-甲基-3-丙基-4-戊烯-2-酮 3-乙基-5-己烯-2-酮 4-Methyl-3-propyl-4-penten-2-one 3-Ethyl-5-hexen-2-one >?@ABCD F& G&E 5&& 7 5&=6 ! F&"6 # " "# $ !