题目内容
行胃大部切除术的患者易产生巨幼细胞贫血的原因是
2021-10-11
A.壁细胞数量减少，内因子分泌减少
B.壁细胞数量减少，胃酸分泌减少
C.主细胞数量减少，胃蛋白酶原分泌减少
D.胃容积减小
E.储存食物量减少
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