第16题: [单项选择]How about the machines used in the factories A. Most of them are made in China. B. Most of them are imported from abroad. C. They made most of them by themselves. D. They made all of them by themselves. 参考答案:A
第35题: [单项选择]不会引起空气栓塞的是() A. 头颈部创伤 B. 胸部手术 C. 大隐静脉切开插管 D. 肺创伤 E. 胸部创伤 参考答案:C 答案解析:头颈部手术、胸壁和肺创伤损伤静脉时,空气进入具有负压的静脉,随血液入右心后,由于心脏搏动,将空气和血液搅拌形成大量泡沫,当心脏收缩时阻塞肺动脉出口导致猝死。