单选题符合缺铁性贫血潜伏期的是A．血清铁蛋白下降B．血清铁下降C．转铁蛋白饱和度下降D．总铁结合力下降E．小细胞低色素性贫血

单选题某疑似肺血栓栓塞症患者，右下肢疼痛或压痛、浅静脉扩张、皮肤色素沉着、行走后患肢易疲劳或肿胀加重。下肢周径的测量点为：

单选题She knew how to make an entrance. Her dark hair cut in a severe pageboy, Ayn Rand would sweep into a room with a long black cape, a dollar-sign pin on her lapel and an ever present cigarette in an ivory holder. Melodramatic, yes, but Rand didn't have time to be subtle. She had millions of people to convert to objectivism, her philosophy of radical individualism, limited government and avoidance of altruism and religion. Her adoring followers--some called them a cult--revered her as the high priestess of laissez-faire capitalism until her death in 1982 at age 77. The bad economy has been good news for Rand's legacy. Her fierce denunciations of government regulation have sent sales of her two best-known novels, The Fountainhead and Atlas Shrugged, soaring. Yet her me-first brand of capitalism has been exccoriated (严厉批评) for fomenting (引发) the recent financial crisis. And her most famous former acolyte-onetime Fed chairman Alan Greenspan--has been blamed for inflating the housing bubble by refusing to intervene in the market. In the midst of the newly rekindled debate, two excellent biographies have just been published: Ayn Rand and the World She Made, by Anne C. Heller (Doubleday; 592 pages), is a comprehensive study, in novelistic detail, of Rand's personal life, and Goddess of the Market : Ayn Rand and the American Right, by Jenniter Burns (Oxford; 369 pages), leans more heavily on Rand's theories and politics. From her earliest years, Rand was a woman on a mission. Born in 1905 to a bourgeois Jewish family in St. Petersburg, Rand was 12 when the Bolshevik Revolution took place. Her family, suddenly poor, was forced to flee, and Rand's hatred of communism and any sort of collectivism would guide her life. Arriving in the US in 1926 with a new name, Ayn (rhymes with fine) made her way to Hollywood, where she had modest success as a screenwriter and married an aspiring actor, Frank O'Connor. Her politicization came when she and her husband worked on Republican Wendell Willkie's losing presidential campaign in 1940. According to Burns, "Before Willkie she had been pro-capitalist yet pessimistic, writing 'The capitalist world is low, unprincipled, and corrupt. ' Now she celebrated capitalism as the 'noblest, cleanest and most idealistic system of all'. " The Fountainhead, an epic novel chronicling the struggles of an architect named Howard Roark against conventional values, was her breakout work. In her race to get the sprawling 700-page book to press, she began taking the amphetamine Benzedrine (一种兴奋剂的名称) to fuel her efforts. "Rand used it to power her last months of work on the novel, including several 24-hour sessions correcting page proofs," writes Burns. The book brought Rand financial security and fame.

单选题糖尿病饮食治疗中，糖类含量约占饮食总热量的

单选题患者，女，50岁，确诊肺结核3年，近日发现卡那霉素耐药，结核病恶化选择最佳方案是

单选题甲亢病人出现大便次数增多或腹泻主要是因为A．胃酸缺乏B．肠道炎症C．肠蠕动增强D．结肠过敏E．小肠吸收不良

单选题A．肺癌 B．自发性气胸C．支气管扩张 D．肺结核E．肺脓肿

单选题血小板消耗过多导致的血小板减少性疾病是

单选题 男性，60岁，因咳喘多年，症状加重3天入院。动脉血气分析(呼吸空气)PaO28kPa(60mmHg)，PaCO26.2kPa(55mmHg)。其低氧血症的发生机制中下列哪条不是主要的? A、弥散量降低 B、通气分布不均和通气/血流比例失调 C、动一静脉血分流 D、肺泡通气量降低 E、呼吸功和氧耗量增加

单选题男性45岁，饮酒20余年，3两白酒／日，查体肝肋下2．0cm，脾肋下5．0cm，化验外周血三系均减少，最可能的原因为

单选题对高度怀疑肠结核的病例中，下列最有利于临床诊断的是

单选题小结节性肝硬化的特征错误的是

单选题正常人动脉血液中血红蛋白的氧饱和度为

单选题糖尿病肾病具有特异性的肾脏病理变化为

单选题艾滋病最常见的恶性肿瘤是

单选题误服下列哪种药物应禁忌洗胃

单选题 对触电者进行降温，体温降至 A、32℃ B、33℃ C、34℃ D、35℃ E、36℃

单选题 男性，16岁，因心脏病来诊，从小体能较低，易感冒，重体力活动后心悸、气促。血压14.7/9.3kPa，口唇轻度紫绀，轻度杵状指(趾)；心率80次/分，律整，心界不大，右肺中部可闻及连续性血管杂音。X光见右中肺单个结节状搏动阴影，约3~5cm，与血管搏动相一致，并与右肺血管连接。诊断为肺动一静脉漏。正确处理是： A、切开肺部，结扎漏管 B、待肺动脉压中度升高后再考虑手术 C、肺动脉造影后手术切除病灶相关的肺叶或肺段 D、血气分析如无高碳酸血症不处理 E、密切观察，无需处理

单选题关于一般房颤的叙述，不正确的是

单选题女性，59岁，有慢性咳嗽、咳痰、气促病史12余年，诊断为阻塞性肺病，右心衰竭，下列哪项不是体循环瘀血的表现