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【单选题】
已知“1%(g/ml)盐酸麻黄碱溶液冰点降低值为0.16”，已知1克盐酸麻黄碱氯化钠等渗当量为0.28，欲配制2%(g/ml)盐酸麻黄碱滴鼻剂500ml，需要氯化钠的量是()。
A.
1.7g
B.
1.78g
C.
1.83g
D.
1.88g
E.
1.93g
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