单项选择题
A.C1q、C4 B.C3b、C4b C.C3a、C5a D.C2a E.MAC
A.C3b、CAb B.C1q C.C1～C9 D.C3a、CAa、C5a E.C2b
A.C3b B.C1q、C4 C.C2a D.C3a、C5a E.以上都不是
A.C2a B.C3a C.CAb D.C3b E.CSa
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