皮皮学，免费搜题
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搜题
【单选题】
引起慢性肾衰贫血最重要的原因是:
A.
红细胞生存周期缩短
B.
肾产生促红细胞生成素减少
C.
铁的摄入减少
D.
血液透析失血及频繁抽血导致失血
E.
叶酸缺乏
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