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【单选题】
男性，45岁，因慢性肾衰竭行维持性血液透析治疗已有3个月，尿毒症症状明显减轻，但血红蛋白70g／L。本例贫血的主要原因是（）A.
尿毒症毒素抑制骨髓
B.
透析失血及缺铁
C.
叶酸及维生素B缺乏
D.
红细胞寿命缩短
E.
促红细胞生成素减少
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【单选题】•Read the following article on recruiting and managing staff and the questions on the opposite page. •For each question 15-20, mark one letter (A, B, C or D) on your Answer Sheet, for the answer you c...
A.
that they have experience of many different jobs
B.
that their careers have developed steadily
C.
the opinion their employers had of them
D.
whether they are married or single
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