试题与答案

隐性感染后获得的免疫属于()A.人工被动免疫  B.人工主动免疫  C.自然主动免疫

题型:单项选择题

题目:

隐性感染后获得的免疫属于()

A.人工被动免疫 

B.人工主动免疫 

C.自然主动免疫 

D.自然被动免疫 

E.过继免疫

答案:

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