单项选择题
A.C1q B.C1rR C.C5aR D.C1INH E.D因子
A.IgG B.IgA C.IgM D.IgD E.IgE
A.C143256789 B.C124536789 C.C142356789 D.C124356789 E.C123456789
A.IgG和IgA B.IgA和IgM C.IgD和IgM D.IgD和IgE E.IgG和IgM
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