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【单选题】
在间接碘量法测定中,下列操作正确的是()
A.
边滴定边快速摇动
B.
加入过量KI,并在室温和避免阳光直射的条件下确定
C.
在70~80℃恒温条件下滴定
D.
滴定一开始就加入淀粉指示剂
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D.
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E.
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