题目内容
肠梗阻的声像图特征，以下说法错误的是
2022-01-25
A.肠管腔一定不同程度扩张
B.肠腔内大量气体可致肠管径及内容物显 示固难
C.肠管蠕动活跃，内容物不规则往反流动
D.近段肠管扩张，远段肠管呈空虚状态或 正常
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