38.下列何種原因會造成病畜慢性失血、小血球性貧血(microcytic anemia)與低色素性貧血 (hypochromic anemia)?
(A).缺鈷
(B).缺鐵
(C).維他命C 缺乏
(D).四氯化碳中毒
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統計: A(15), B(846), C(13), D(13), E(0) #1149165
統計: A(15), B(846), C(13), D(13), E(0) #1149165