单选题心力衰竭患者伴有高度房室传导阻滞时，应在选择下列哪种治疗的同时使用洋地黄

单选题男性，60岁。因疲劳后突发心悸、呼吸困难、咳嗽、咳泡沫血痰而来院急诊。既往有高血压病、心肌梗死史。查体：血压90／60 mmHg，端坐位，喘息状，口唇发绀，双肺满布中小水泡音，心率140次／分，心音听不清。下列急诊处理中，不正确的是

单选题女性，45岁，既往有Graves病8年，长期口服抗甲状腺素药物治疗，未规律服药，病情时有反复。近2月来感胸闷、心悸。入院后诊断：心房颤动。目前该患者的首选治疗是

单选题下列有关风湿病的描述，哪项是错误的( )(1998年)

单选题A．主动脉夹层B．急性心肌梗死C．肺动脉栓塞D．输尿管结石E．肠系膜动脉栓塞

单选题关于消化性溃疡的癌变，下列哪项是正确的A．各种消化性溃疡均有癌变可能B．癌变发生于溃疡边缘C．癌变率可达1%以上D．症状经严格的内科治疗无改善E．癌变率与年龄无关

单选题世界范围内引起婴幼儿下呼吸道疾病中最常见的病毒是

单选题Large, multinational corporations may be the companies whose ups and downs seize headlines. But to a far greater extent than most Americans realize, the economy's vitality depends on the fortunes of tiny shops and restaurants, neighborhood services and factories. Small businesses, defined as those with fewer than 100 workers, now employ nearly 60 percent of the work force and are expected to generate half of all new jobs between now and the year 2000. Some 1.2 million small firms have opened their doors over the past six years of economic growth, and 1989 will see an additional 200,000 entrepreneurs striking off on their own. Too many of these pioneers, however, will blaze ahead unprepared. Idealists will overestimate the clamor for their products or fail to factor in the competition. Nearly everyone will underestimate, often fatally, the capital that success requires. Midcareer executives, forced by a takeover or a restructuring to quit the corporation and find another way to support themselves, may savor the idea of being their own boss but may forget that entrepreneurs must also, at least for a while, be bookkeeper and receptionist, too. According to Small Business Administration data,24 of every 100 businesses starting out today are likely to have disappeared in two years, and 27 more will have shut their doors four years from now. By 1995,more than 60 of those 100 start-ups will have folded. A new study of 3,000 small businesses, sponsored by American Express and the National Federation of Independent Business, suggests slightly better odds: Three years after start-up, 77 percent of the companies surveyed were still alive. Most credited their success in large part to having picked a business they already were comfortable in. Eighty percent had worked with the same product or service in their last jobs. Thinking through an enterprise before the launch is obviously critical. But many entrepreneurs forget that a firm's health in its infancy may be little indication of how well it will age. You must tenderly monitor its pulse. In their zeal to expand, small-business owners often ignore early warning signs of a stagnant market or of decaying profitability. They hopefully pour more and more money into the enterprise, preferring not to acknowledge eroding profit margins that mean the market for their ingenious service or product has evaporated, or that they must cut the payroll or vacate their lavish offices. Only when the financial well runs dry do they see the seriousness of the illness, and by then the patient is usually too far gone to save. Frequent checks of your firm's vital signs will also guide you to a sensible rate of growth. To snatch opportunity, you must spot the signals that it is time to conquer new markets, add products or perhaps franchise your hot idea.

单选题男性患者，60岁，慢性阻塞性肺病15年，近1周咳喘加重，紫绀明显，烦躁，血气分析：pH7．4、PaO 2 40mmHg、PatCO 2 70mmHg，进行氧疗应采用

单选题大学生，22岁，因发热、荨麻疹、关节痛和关节炎前来就诊。检查时，未发现任何病因，症状自动消退。几周后复诊时有恶心、呕吐、头痛、厌食、萎靡不振、发热、强烈的瘙痒感和右上腹部疼痛。检查发现肝大及黄疸。患者自述尿液颜色变深，粪便已变成黏土色。验血报告血清中转氨酶、胆红素和总丙种．y．球蛋白升高，且HBsAg、HBeAg和抗-HBc阳性，抗-HBs和抗-HBe及抗-HAV阴性。

单选题女性，30岁，2周前有上呼吸道感染病史。2天来感心悸，胸痛伴乏力。查体：体温37．5℃，脉搏75次/分，血压100/70mmHg，咽稍红，扁桃体不大，心律规则，心率110次/分，心电图示室性心动过速。

单选题 男性，15岁，因穿敌百虫浸泡的内衣3天，意识不清3小时来院，出现哪项症状是不正确的? A、昏迷 B、瞳孔缩小 C、皮肤干燥 D、面部肌肉颤动 E、肺水肿

单选题有关胃溃疡的特点，以下叙述正确的是

单选题男，62岁，经丙硫氧嘧啶治疗1.5年后甲状腺较前缩小。T 3 抑制试验：3小时抑制率>50％，24小时抑制率>50％，TT 3 、TT 4 正常。对此病人应作的处理是

单选题下列选项属于抗ENA抗体的是

单选题支气管扩张患者施行体位引流排痰，下列哪项不正确( )(1996年)

单选题下列哪项是急性肾炎与慢性肾炎的重要鉴别特征

单选题下列关于促胰液素生理作用的叙述，错误的是( )(2010年)

单选题A．肝铁含量增加B．lgA升高C． 血清铜蓝蛋白降低D．胆固醇升高E．抗核抗体阳性

单选题 对药物依赖的描述，下述哪项不恰当： A、药物依赖包括精神依赖和躯体依赖好.精神依赖是指病人对药物的渴求以期获得服想药后的特殊快感 C、躯体依赖是很反复用药使中枢神经系统发生某种变化，索要药物持续存在于体内，避免出现戒断症状 D、尼古丁只引起精神依赖，不引起躯体依赖 E、以上都不是