单选题腹部损伤时作诊断性腹腔穿刺，抽出不凝固血液，最可能的诊断为

单选题风湿性心脏病病人尤其应注意的电解质紊乱类型是（ ）

单选题关于动脉瘤的临床表现，下列哪项是不正确的

单选题股骨干骨折梅花型髓内针固定不适合下列哪种类型骨折

单选题男性，42岁，毕Ⅱ式胃大部分切除术后两年，上腹部有烧灼痛，抗酸剂治疗无效，有时呕吐，内含胆汁，吐后腹痛无缓解，胃镜下黏膜充血，水肿，易出血。最可能的诊断是A．输入段综合征B．输出段梗阻C．碱性反流性胃炎D．吻合口梗阻E．吻合口溃疡

单选题关于外科感染分类的叙述，哪项是错误的A．丹毒、急性阑尾炎、急性乳腺炎等均属特异性感染B．急性感染指病程在3周以内C．条件性感染指平常为非致病的病原菌乘机体抵抗力下降时乘机而人所引起的感染D．院内感染的主要致病菌是条件致病菌E．病程超过2个月者为慢性感染

单选题A．蚤咬肾B．大白肾C．颗粒性固缩肾D．瘢痕肾

单选题下列不符合前列腺增生症的是

单选题关于腹外疝恰当的是

单选题不宜做直肠指检的是

单选题术后肺不张的主要治疗方法是

单选题A．发热反应B．溶血反应C．过敏反应D．循环超负荷

单选题大手术前，病人呼吸系统的准备方面，下列哪项不正确A．停止吸烟B．有阻塞性肺功能不全者，可给麻黄碱、氨茶碱扩张支气管C．有哮喘者，可给口服地塞米松减轻黏膜水肿D．鼓励病人练习深呼吸及咳嗽、增加肺通气量和引流E．慢性支气管炎病人可给吗啡止咳

单选题血流动力学监测发现CVP增高而血压正常，提示

单选题急性腹痛向腰背部放射，是因为（ ）

单选题多根多处肋骨骨折，伤员呼吸困难，疼痛，吸氧状态下血气分析PO 2 60％，PCO 2 50％，SO 2 94％，立即

单选题判断甲亢病情程度和治疗效果的重要标志是

单选题肾积水的确诊选用

单选题白细胞尿时1小时尿白细胞计数超过

单选题If you are a tourist interested in seeing a baseball game while in New York, you can Find out which of its teams are in town simply by sending a message to AskForCents. com. In a few minutes, the answer comes back, apparently supplied by a machine, but actually composed by a human. Using humans to process information in a machine-like way is not new- it was pioneered by the Mechanical Turk, a famed 18th-century chess-playing machine that was operated by a hidden chessmaster. But while computers have since surpassed the human brain at chess, many tasks still baffle even the most powerful electronic brain. For instance, computers can find you a baseball schedule, but they cannot tell you directly if the Yankees are in town. Nor can they tell you whether sitting in the bleachers is a good idea on a first date. AskForCents can, because its answers come from people. "Whatever question you can come up with, there's a person that can provide the answer-- you don't have the inflexibility of an algorithm-driven system," says Jesse Heitler, who developed AskForCents. Mr. Heitler was able to do this thanks to a new software tool developed by Amazon, the online retailer, that allows computing tasks to be farmed out to people over the internet. Aptly enough, Amazon's system is called Mechanical Turk. Amazon's Turk is part toolkit for software developers, and part online bazaar: anyone with internet access can register as a Turk user and start performing the Human Intelligence Tasks (HITs) listed on the Turk website (mturk.com ). Companies can become "requesters" by setting up a separate account, tied to a bank account that will pay out fees, and then posting their HITs. Most HITs pay between one cent and $ 5. So far, people from more than 100 countries have performed HITs, though only those with American bank accounts can receive money for their work; others are paid in Amazon gift certificates. Mr. Heitler says he had previously tried to build a similar tool, but concluded that the infrastructure would be difficult to operate profitably. Amazon already has an extensive software infrastructure designed for linking buyers with sellers, however, and the Turk simply extends that existing model. Last November Amazon unveiled a prototype of the system, which it calls "artificial artificial intelligence". The premise is that humans are vastly superior to computers at tasks such as pattern recognition, says Peter Cohen, director of the project at Amazon, so why not let software take advantage of human strengths? Mr. Cohen credits Amazon's boss, Jeff Bezos, with the concept for the Turk. Other people have had similar ideas. Eric Bonabeau of Icosystem, an American firm that builds software tools modeled on natural systems, has built what he calls the "Hunch Engine" to combine human intelligence with computer analysis. The French postal service, for example, has used it to help its workers choose the best delivery routes, and pharmaceutical researchers are using it to determine molecular structures by combining their gut instincts with known results stored in a database. And a firm called Seriosity hopes to tap the collective brainpower of the legions of obsessive players of multiplayer online games such as "World of Warcraft", by getting them to perform small real-world tasks (such as sorting photographs) while playing, and paying them in the game's own currency.