A.樣品處理→樣液預(yù)滴→精滴→標(biāo)定堿性酒石酸銅溶液
B.樣品處理→樣液預(yù)滴→預(yù)滴→標(biāo)定堿性酒石酸銅溶液
C.樣品處理→標(biāo)定堿性酒石酸銅溶液→樣液預(yù)滴→精滴
D.樣液預(yù)滴→精滴→樣品處理→標(biāo)定堿性酒石酸銅溶液