题目内容

计算乙肝疫苗接种后血清学检查的阳转率,分母为

A. 乙肝易感人数
B. 平均人口数
C. 乙肝疫苗接种人数
D. 乙肝患者人数
E. 乙肝疫苗接种后的阳转人数

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B. 最好用绝对数表示
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Julianna lives in Brazil.

A. 对
B. 错