题目内容
肠梗阻的典型X线表现为
2022-01-08
A.阶梯状气液平
B.膈下半月形透亮气体影
C.龛影周围有不同程度的充盈缺损和狭窄
D.肠壁俚硬，结肠袋消失
E.龛影较大，形状不规则，边缘不整齐
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