A.1.5,0.5 B.1.0,0.1 C.0.5,0.15 D.0.15,0.15 E.0.1,0.05
具有阻斷亞硝基化作用是()
A.維生素A B.維生素K C.維生素C D.維生素B12 E.維生素pp