单项选择题
A.紫外-可见吸收光谱 B.分子荧光谱 C.红外光谱 D.原子吸收光谱
A.0 B.1 C.2 D.3
A.CH3-CHO B.CH3-CO-CH3 C.CH3-CHOH-CH3 D.CH3-O-CH2-CH3