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【单选题】
ChP2015中测定盐酸普鲁卡因含量,1ml硝酸钠滴定液(0.1mol/L)相当于多少盐酸普鲁卡因(M=272.77)A.
13.64mg
B.
6.82mg
C.
27.28mg
D.
2.278mg
E.
54.56mg
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