单项选择题
A.C3a、C4a B.C3a、C5a C.C4a、C5a D.C3a、C5b E.C3b、C4b
A.C1q B.C3b C.C5a D.C4b E.C2a
A.C3b B.C3c C.C3d D.C2a E.C3a
A.C2 B.B因子 C.C1 D.C3 E.C4
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