A.0.785 B.0.788 C.0.787 D.0.7876 E.0.79
A.110.0% B.105.0% C.103.0% D.101.0% E.100.5%
A.酚酞 B.甲基橙 C.甲基紅 D.石蕊試紙 E.PH試紙