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中国药典用碘量法测定加有亚硫酸氢钠的维生素C注射液。在滴定前应加入

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中国药典用碘量法测定加有亚硫酸氢钠的维生素C注射液。在滴定前应加入

A.丙酮

B.乙醇

C.草酸

D.盐酸

E.氯化钠

参考答案:

答案：A

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