胃穿孔特征性X线表现是
A.胃扩张像
B.胃停止蠕动
C.膈下游离气体
D.气液平面
E.膈肌抬高
参考答案:C
27. You should write the first letter of the sentence _____ capital one.
A.on
B.with
C.in
D.At
现时成本会计报表