A.14.0~18.0% B.12.0~18.0% C.10.0~12.0% D.12.0~14.0%
A.45~50℃ B.63~70℃ C.75~80℃ D.25℃
A.溶液顯無(wú)色 B.溶液顯白色混濁 C.溶液呈淺蘭色 D.溶液呈蘭色并有黑色沉淀