A. CH3CHO B. C6H5COCH3 CH3CH(OH)CH2CH3 D. CH3COOCH2CH3
A. CH3CH2CH2CH2CHO B. CH3CH2CH2CH2OH CH3CH2CH2CHOHCH3 D. CH3CH2COCH2CH3
A. (C6H5)3C-CHO B. C6H5CH2CHO CH3CH2CHO D. (CH3)2CHCHO
A. 对 B. 错
A. 对,间 B. 邻,对 C. 邻,间 D. 邻,间,对