单选题诊断门静脉高压症最有意义的征象是

单选题腹股沟管的走行方向是

单选题女性，36岁，1年来乏力、易疲倦、腰部不适，有时下肢浮肿，未检查。2个月来加重，伴纳差，血压增高为150/100mmHg，下肢轻度浮肿。尿蛋白(+)，沉渣RBC5～10个/HP，偶见颗粒管型，血化验Hb90g/L，血肌酐400μmol/L。

单选题一患者，男性，25岁，因外伤造成右侧髂骨骨折伴耻骨联合分离，急诊入院，伤后8小时无小便，一般情况好。考虑可能存在下列哪种情况

单选题Raymond Arth knows he should feel better about the economy. His company hasn't returned to its pre-recession revenues selling its wares to the makers of RVs and manufactured homes, but it is making a profit again. Like too many other small-business proprietors, Arth doesn't fully trust this economic recovery. While he says he's "guardedly optimistic" about it, his actions are all about the first half of that phrase, In the Labor Department's latest snapshot of the country's job market, the private sector added 268,000 jobs in April, the largest gain in five years and the third consecutive month of solid job growth. Yet a more sobering account of where the economy might be headed—and arguably a more accurate barometer of the near-term future—is the monthly report published by the National Federation of Independent Business. After all, it's small businesses, which have created two out of every three new jobs the economy has added since the early 1990s, that historically have led the country out of recessions. And it's the owners of small businesses that the NFIB surveys each month for its Small Business Optimism Index. On that front the news is anything but good. The index is down for the second straight month. Fewer small-business owners expect conditions to improve over the next half year a drop of 18 percentage points from January. The bulk of new hiring must be happening inside larger corporations, since their smaller counterparts on Main Street say they are generally reluctant to create new jobs. That aptly sums up the sentiments of Scott Lipps, the president of the Sleep Tite Mattress Factory. Before the downturn, Lipps says, his sales were about evenly split between his medical clients (hospitals and nursing homes) and consumers buying mattresses through a factory outlet. But sales to the general public plummeted starting in 2008. "The families affected most by the economy have stopped buying," Lipps says. "And those who say 'We have to have a new mattress' are downgrading to a medium-quality mattress. " Despite a 20 percent drop in sales, Lipps and his partner tried to forestall the inevitable by putting up $ 70,000 of their own money. But in 2010 they laid off three of their 18 full-time employees. "It should have happened in 2009, but we let our hearts run the company instead of our billfolds," Lipps says. In Bartlesville, Mat Saddoris is feeling relatively more upbeat. Saddoris is the third-generation owner of United Linen, a restaurant-supply company that cut its workforce by more than 10 percent during the downturn's darkest days. Revenues are back up to pre-2008 levels, and United Linen is back to its pre-recession staffing of 135 employees. But will he take the risk of growing the company? "I talk to my customers and they're optimistic—to a point," he says. "They've all come back from the pits, if you will, and things have been getting better in the past six or seven months. " But, he says, "I don't think they're ready to announce that things have turned around. /

单选题 男，26岁，肺部感染后反复咳嗽咳痰一月，CT检查如图，最可能的诊断为 ( ) A、支气管囊肿并感染 B、右下肺隔离症并感染 C、肺部感染 D、支气管扩张并感染 E、肺癌

单选题天于骶椎麻醉(骶麻)，下列哪项是正确的A．是硬膜外麻醉B．别名为鞍区阻滞C．易引起马尾综合征D．不易发生局麻药巾毒E．睾丸切除术可用这种麻醉方法

单选题股骨干1／3骨折出现下列哪种畸形

单选题A．直腿抬高试验阳性和加强试验阳性 B．X线片示腰椎生理前突消失和侧凸C．两者均可有 D．两者均无

单选题 一25岁女性病人，一个月前自然分娩一男婴，近二日发现右颈部毛囊炎，右乳头有小裂口，轻痛，来门诊.对于如何预防乳房炎，医生提出的忠告中，下列哪项是不对的? A、及时排空乳汁，防止淤积 B、哺乳后清洗乳头，小裂口要及时治疗 C、定时哺乳 D、应静滴抗生素 E、不要让婴儿含乳头睡觉

单选题A．4～5天 B．6～7天 C．7～9天 D．14天

单选题引起低渗性缺水的原因有

单选题男，50岁，潜水员工作22年，近1年来有髋关节疼痛，经服用非甾体抗炎药可短暂缓解，后疼痛加重并呈持续性，渐出现跛行及行走困难。

单选题外伤性血胸，已作肋间插管引流，第1次引流出血性胸液1200mL，以后约100mL，3小时后减至50mL，血压12.0／9.3kPa(90／70mmHg)，心率110次／分，面色苍白，呼吸28次／分，气管移位不明显，最恰当的处理应是

单选题输血可传播以下哪一种疾病( )(1990年)

单选题关于消化性溃疡，以下哪项是外科手术治疗的绝对适应证

单选题影响膀胱肿瘤患者预后的重要因素是

单选题甲状腺次全切除术后，病人出现手足抽搐发作时，最便捷而有效的治疗是A．静脉注射10%葡萄糖酸钙或氯化钙10～20mlB．口服葡萄糖酸钙或乳酸钙2～4gC．口服维生素D．口服双氢速变固醇油剂E．停食肉类、乳品和蛋类食品

单选题在骨折愈合过程中，哪项是错误的A．血肿机化演进期约需两周方能初步完成B．内、外骨痂由膜内化骨而来，环状及腔内痂由软骨内化骨而来C．原始骨痂形成期，骨痂不断加强，能抗拒一定应力，即达临床愈合D．骨痂由血肿机化而来，血肿较大骨痂多E．骨痂改造塑形期在临床愈合以后

单选题A．青壮年男性B．青壮年女性C．老年男性D．老年女性