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鱼精蛋白硫酸盐可与体内肝素结合而使肝素失去抗凝血能力，适用于肝素过量而引起的出血。1mg鱼精蛋白硫酸盐可中和肝素（）。
A . 10U
B . 50U
C . 100U
D . 1000U
E . 1ml
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