题目内容
老年人易发生腹胀的原因是
2021-10-09
A.胃肠蠕动减慢，食物在胃内排空速率降低
B.胃肠蠕动不变，食物在胃内排空速率加快
C.胃肠蠕动加快，食物在胃内排空速率不变
D.胃肠蠕动不变，食物在胃内排空速率降低
E.以上均不正确
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