第4题: [单项选择]Beth Hatfield lost her job because the company she worked for A. had financial difficulties. B. lost a major contract. C. was taken over. 参考答案:A 答案解析:[听力原文]23-30 M: Welcome to Business Start-up. Our guest today is Beth Hatfield. Beth started her o
第26题: [单项选择]胃肠道穿孔应做() A. 上消化道钡餐造影 B. 小肠导管造影 C. 钡剂灌肠 D. 腹部透视 E. 断层摄影 参考答案:D 答案解析:胃肠道穿孔立位X线透视或腹部平片可见:两侧膈下有弧形或半月形透亮气体影。肠梗阻典型X线表现为:梗阻上段肠管扩张、积气、积液,立位或侧位水平位摄片可见肠管扩张,呈阶梯状气液平,梗阻以下的肠管闭合,无气体