Do you have an ____________with Mr. Smith?
A. appointment
B. call
C. date
D. invitation
查看答案
It’s time to ___________ now.
A. see
B. board
C. plane
D. flight
胃肠道穿孔的最典型X线征象为
A. 咖啡豆征
B. 阶梯状液平面
C. 膈下新月形气体
D. 结肠积气
E. 肠腔扩张
胃肠钡餐检查前最主要是检查日晨
A. 禁食禁水
B. 洗胃
C. 清洁灌肠
D. 肌注低张药
E. 抽空胃液