A.>10%B.>1.2%C.>5%D.>7%E.>21%
A.急性輸血反應(yīng)B.感染C.惡性腫瘤D.創(chuàng)傷E.SLE
A.急性失血B.缺鐵性貧血C.再障D.巨幼細(xì)胞性貧血E.腸道吸收不良綜合癥