A.0.0001,0.004 B.0.0002,0.008 C.0.0003,0.0016 D.0.0004,0.012
A.硫酸 B.鹽酸 C.硝酸 D.磷酸
A.鉻和鉆 B.錫和鉍 C.汞和銀 D.銻和鉍