单选题胰腺癌无黄疸时，血清生化学检查可见

单选题对原发性肝癌诊断有特异性的是

单选题急性胰腺炎非手术疗法措施中，错误的是

单选题下列关于输血速度的描述不正确的是

单选题20岁男性患者，全身重度水肿4周入院，查尿蛋白(++++)，红细胞o~3／HP，血红蛋白ll0g／L，血白蛋白20g／L，血压105／70mmHg，治疗首选

单选题A．青霉素 B．诺氟沙星C．妥布霉素 D．甲硝唑E．多黏菌素

单选题腰椎间盘突出在神经根的外侧，则A．腰椎凸向患侧B．腰椎凸向健侧C．腰椎无侧凸D．腰椎前凸消失E．腰前凸增加

单选题月经周期正常的妇女，其月经黄体能维持几天

单选题Not many 25-year-olds can reasonably claim to have changed the world. The IBM personal computer, which was launched in 1981 and celebrates its 25th birthday in August, is a rare exception. Other personal computers had been launched before; but it was the IBM PC that ended up defining the standard around which a vast new industry then coalesced. IBM, the titan of the computing World at the time, quickly lost control of its own creation, allowing others to reap the benefits. But leave aside what the PC has done for the fortunes of particular companies, and instead step back and consider what the PC has done for mankind. The PC's most obvious achievement has been to help make computers cheaper, more widely available and more useful than ever before. Before it appeared, different computers from different manufacturers were mostly incompatible with each other. The PC's architecture was not perfect, but its adoption as an industry standard made possible economies of scale in both hardware and software. This in turn reduced prices and enabled the PC to democratise computing. But although the PC has its merits, it also has its faults. Its flexibility has proved to be both a strength and a weakness: it encourages innovation, but at the cost of complexity, reliability and security. And for people in the developing world, PCs are too bulky, expensive and energy-hungry. W. hen it comes to extending the benefits of digital technology--chiefly, cheap and easy access to information to everyone on the planet, the PC may not be the best tool for the job. Look on the streets of almost any city in the world, however, and you will see people clutching tiny, pocket computers, better known as mobile phones. Already, even basic handsets have simple web-browsers, calculators and other computing functions. Mobile phones are cheaper, simpler and more reliable than PCs, and market forces--in particular, the combination of pie-paid billing plans and microcredit schemes--are already putting them into the hands of even the world's poorest people. Initiatives to spread PCs in the developing world, in contrast, rely on top-down funding from governments or aid agencies, rather than bottom-up adoption by consumers. All kinds of firms, from giants such as Google to start-ups such as CellBazaar, are working to bring the full belle, fits of the web to mobile phones. There is no question that the PC has democratised computing and-unleashed innovation, but it is the mobile phone that now seems most likely to carry the dream of the "personal computer" to its conclusion.

单选题低钾性碱中毒可能出现于下列哪种情况( )(1995年)

单选题急性乳腺炎的治疗原则不正确的是

单选题女性，40岁，十二指肠球部溃疡多年，近2个月来，食后上腹胀满，呕吐，吐宿食。查体：消瘦，脱水征，上腹稍膨隆，偶见胃型，有振水音，治疗应首先选择

单选题等渗性缺水的常见原因是

单选题大手术前，病人呼吸系统的准备方面，下列哪项错误( )(1993年)

单选题A．脂肪栓塞B．骨化性肌炎（损伤性骨化）C．缺血性肌挛缩D．创伤性关节炎

单选题男性血尿患者，膀胱镜检发现左输尿管口周围膀胱黏膜充血、水肿，散在几个米黄色粟粒大小的小结节。还应做下列哪项检查

单选题多根多处肋骨骨折急救要点是

单选题男性，25岁，汽车撞击右髋部4小时，有尿意但不能自主排尿，体检：110/80mmHg，脉搏94次/分，腹软，下腹部隆起伴轻压痛，肠鸣音正常，右髋部肿胀，皮下淤血，直肠指诊前列腺尖部浮动，X线摄片显示：双侧耻骨上下支骨折。

单选题恶性度较高的胃癌发生跳跃性转移，最常见的部位是

单选题A．微小病变肾病B．系膜增生性肾小球肾炎C．系膜毛细血管性肾小球肾炎D．膜性肾病