单选题慢性肾功能不全患者肾功能急剧恶化的诱因是
单选题男，20岁，右上臂撞伤后中下段成角畸形反常活动，腕关节下垂，不能主动背伸，各掌指关节不能主动伸直，除考虑肱骨干中下段骨折外，还应首先考虑
单选题患者，男性，25岁，因会阴部骑跨于硬物上后出现尿道滴血而急来就诊，查体：会阴部肿胀，最可能的诊断是
单选题A．人乳头瘤病毒感染B．雌激素水平过高C．雄激素减少，雌激素相对增多D．尿中hCG明显增高
单选题急性肾功能衰竭少尿期病人常见的死亡原因是（ ）
单选题甲状腺大部切除术后，呼吸困难和窒息的并发症与哪项因素无关( )(1996年)
单选题下列哪项不是腹部损伤后手术探查的可靠指征A．腹痛B．肠鸣音消失C．膈下有游离气体D．血压有下降趋势E．脉搏增快，体温升高
单选题有关肾癌的治疗，较恰当的方法是
单选题下列选项中，对慢性肾衰竭诊断最有价值的是
单选题正常时肾小球滤液(原尿)在肾小管内被吸收的液体量占总量的( )(1992年)
单选题每1克组织的致病菌数一般需超过多少才导致感染
单选题男性患者，55岁，嗜酒，有“胃病史”多年。2天前饱餐后突发上腹剧痛，．恶心、呕吐10余次，呕吐后腹痛不能缓解。入院体检：血压90／65mmHg，心率100次／分。腹胀明显，左上腹及剑突下压痛反跳痛明显。血白细胞20×10
9
／L，中性粒细胞0.92，血K
+
4.5mmol／L。Na
+
145mmol／L，Ca
2+
1.56mmol／L，血淀粉酶250U／dL(Somo-gyi法)。本例最可能的诊断是
单选题骨折急救处理中，哪项不恰当
单选题A．α受体阻滞剂B．β受体阻滞剂C．α受体兴奋剂D．β受体兴奋剂
单选题白发性蛛网膜下腔出血最主要的原因
单选题诊断尿石症的最主要方法是
单选题男性，22岁，水肿、尿少2周，尿蛋白3.6g／d，红细胞(+++)，尿圆盘电泳有白蛋白、免疫球蛋白、C
3
本例蛋白尿属于哪种损伤所致
单选题In 1929 John D. Rockefeller decided it was time to sell shares when even a shoe-shine boy offered him a share tip. During the past week The Economist's economics editor has been advised by a taxi driver, a plumber and a hairdresser that "you can't go wrong" investing in housing-the more you own the better. Is this a sign that it is time to get out? At the very least, as house prices around the world climb to ever loftier heights, and more and more people jump on to the buy-to-let ladder, it is time to expose some of the fallacies regularly trotted out by so many self-appointed housing experts. One common error is that house prices must continue to rise because of a limited supply of land. For instance, it is argued that "house prices will always rise in London because lots of people want to live here". But this confuses the level of prices with their rate of change. Home prices are bound to be higher in big cities because of land scarcity, but this does not guarantee that urban house prices will keep rising indefinitely-just look at Tokyo's huge price-drops since 1990. And, though it is true that a fixed supply of homes may push up house prices if the population is rising, this would imply a steady rise in prices, not the 20% annual jumps of recent years. A second flawed argument is that low interest rates make buying a home cheaper, and so push up demand and prices. Lower interest rates may have allowed some people, who otherwise could not have afforded a mortgage, to buy a home. But many borrowers who think mortgages are cheaper are suffering from money illusion. Interest rates are not very low in real, inflation-adjusted terms. Initial interest payments may seem low in relation to income, but because inflation is also low it will not erode the real burden of debt as swiftly as it once did. So in later years mortgage payments will be much larger in real terms. To argue that low nominal interest rates make buying a home cheaper is like arguing that a car loan paid off over four years is cheaper than one repaid over two years. Fallacy number three is a favourite claim of Alan Greenspan, chairman of America's Federal Reserve. This is that price bubbles are less likely in housing than in the stockmarket because higher transaction costs discourage speculation. In fact, several studies have shown that both in theory and in practice bubbles are more likely in housing than in shares. A study by the IMF finds that a sharp rise in house prices is far more likely to be followed by a bust than is a share-price boom.
单选题在肠梗阻的非手术治疗中，下述观察项目哪项最主要A．腹膜刺激征B．脉搏增快C．腹胀较前明显D．肠呜音较前减弱E．腹痛加重
单选题下列关于胰腺假性囊肿的叙述中，正确的是A．多继发于腹部外伤B．囊壁上皮可分泌黏液C．主要体征是上腹包块D．诊断后尽早手术切除