头孢菌素注射剂作为皮肤过敏试验的浓度是A:100ug/ml B:250ug/ml C:500ug/ml D:750ug/ml E:1000ug/ml

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问题头孢菌素注射剂作为皮肤过敏试验的浓度是

选项 A:100ug/ml
B:250ug/ml
C:500ug/ml
D:750ug/ml
E:1000ug/ml

答案C

解析

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