A.(CH3)3CNH2 B.CH3CH2OH C.CH3NHCH(CH3)2 D.(CH3)2CHNH2
A.CH3CH2CH2NH2 B.CH3CH2NHCH3 C.CH3N(CH3)2 D.NH3
A.乙胺 B.甲乙胺 C.甲醛 D.苯胺