单选题对慢性化脓性骨髓炎最有意义的诊断依据是
单选题男，48岁，左侧腰部疼痛4个月。1年前左肾下盏结石ESWL治愈。CT显示左肾下极多发性结石，下肾盏明显扩张伴肾实质萎缩，但左。肾中上盏显影良好。最适宜治疗方法是
单选题可以用于判断双肾功能的检查是（ ）
单选题下列关于营养途径的选择，错误的是
单选题下列哪一疾病的上腹痛可采取左侧卧位而缓解A．消化性溃疡B．钩虫病C．慢性胃炎D．胃黏膜脱垂症E．十二指肠炎
单选题下列哪项关于中心静脉压的叙述是错误的( )(1999年)
单选题患者，男性，53岁，汽车撞伤3小时，急诊入院，检查：骨盆骨折，左股骨干骨折及左胫腓骨开放性骨折，入院后首先应密切观察的是哪一种并发症
单选题轻微病变性肾小球肾炎的特征性病变是A．系膜细胞增生B．系膜细胞及内皮细胞增生C．脏层上皮细胞足突融合D．壁层上皮细胞及巨噬细胞增生
单选题When there is blood in the water, it is only natural that dorsal fins swirl around excitedly. Now that America's housing market is ailing, predators have their sights on the country's credit-card market. Analysts at Goldman Sachs reckon that credit-card losses could reach $ 99 billion if contagion spreads from subprime mortgages to other forms of consumer credit. Signs of strain are clearly visible. There are rises in both the charge-off and delinquency rates, which measure the share of balances that are uncollectable or more than 30 days late respectively. HSBC announced last month that it had taken a $1.4 billion charge in its American consumer-finance business, partly because of weakness among card borrowers. It is too early to panic, though. Charge-offs and delinquencies are still low. According to Moody's, a rating agency, the third-quarter delinquency rate of 3.89% was almost a full percentage point below the historical average. The deterioration in rates can be partly explained by technical factors. A change in America's personal-bankruptcy laws in 2005 led to an abrupt fall in bankruptcy filings, which in turn account for a big chunk of credit-card losses ; the number of filings (and thus charge-off rates) would be rising again, whether or not overall conditions for borrowers were getting worse. The industry also reports solid payment rates, which show how much of their debt consumers pay off each month. And confidence in credit-card asset-backed securities is pretty firm despite paralysis in other corners of structured finance. Dennis Moroney of Tower Group, a research firm, predicts that issuance volumes for 2007 will end up being 25% higher than last year. Direct channels of infection between the subprime-mortgage crisis and the credit-card market certainly exist: consumers are likelier to load up on credit-card debt now that home- equity loans are drying up. But card issuers look at cash flow rather than asset values, so falling house prices do not necessarily trigger a change in borrowers' creditworthiness. They may even work to issuers' advantage. The incentives for consumers to keep paying the mortgage decrease if properties are worth less than the value of the loan; card debt rises higher up the list of repayment priorities as a result. Card issuers are also able to respond much more swiftly and flexibly to stormier conditions than mortgage lenders are, by changing interest rates or altering credit limits. That should in theory reduce the risk of a rapid repricing of assets. "We are not going to wake up one day and totally revalue the loans," says Gary Perlin, Capital One' s chief financial officer. If a sudden subprime-style meltdown in the credit-card market is improbable, the risks of a sustained downturn are much more real. If lower house prices and a contraction in credit push America into recession, the industry will undoubtedly face a grimmer future. Keep watching for those dorsal fins.
单选题女，40岁，大量饮酒后上腹部剧烈疼痛8小时，疼痛为持续性。查体：T38.5℃，上腹部压痛、反跳痛。血常规：WBE17.1×10
9
／L，中性粒细胞0.83；血淀粉酶605索氏单位，尿淀粉酶195索氏(Somogyi)单位，诊断首先考虑为
单选题
电烧伤急救时不正确的原则是 ( )
A、立即脱离电源
B、心跳骤停时立即行心肺复苏
C、必须了解触电经过及查体
D、焦痂及深筋膜切开术
E、高压电击伤后，如病情稳定，可不必立即大量补液，以免加重心肺负担
单选题37岁女性患者，反复水肿1年，临床诊断为慢性肾小球肾炎，血压180/105mmHg，尿蛋白(＋)，红细胞(＋＋)，血肌酐102μmol/L。血红蛋白105g/L。除饮食疗法外，目前该患者最主要的治疗措施应是
单选题伤口边缘整齐，呈线状、出血多、周围组织损伤轻的是A．刺伤B．裂伤C．切伤D．挫伤E．皮肤撕脱伤
单选题肺部确诊肺癌后哪种情况是手术适应证：
单选题
宫内节育器的避孕原理包括（ ）
A、吞噬细胞增多 B、炎性细胞增多 C、前列腺素的作用
D、纤溶作用 E、以上都正确
单选题最常见的泌尿系统损伤是：
单选题
通过直接途径激活受者T细胞的抗原是（ ）
A、MHC抗原
B、mH抗原
C、ABO血型抗原
D、内皮糖蛋白
E、异种抗原
单选题A．甲状腺内大量类似结核结节肉芽肿形成B．甲状腺内大量淋巴细胞浸润C．甲状腺内纤维组织广泛浸润．玻璃样变D．甲状腺内有多个包膜不完整的结节
单选题A．小肠肿瘤B．右侧结肠癌C．节段性肠炎D．左侧结肠癌