36.Christmas disease主要是缺乏第幾凝血因子?
(A)VII
(B)VIII
(C)IX
(D)X
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統計: A(60), B(134), C(1600), D(202), E(0) #1375561
統計: A(60), B(134), C(1600), D(202), E(0) #1375561