单选题原发性深静脉瓣膜功能不全的最可靠方法是

单选题下列哪种疾病不需应用抗菌药物A．毛囊炎B．丹毒C．开放性骨折D．结肠手术前E．人工关节术后

单选题A．环磷酰胺B．盐酸氮芥C．麦考酚吗乙酯D．环孢素

单选题中老年患者中，原发性肾病综合征最常见的病理类型是

单选题膀胱最常见的恶性肿瘤是A．鳞状细胞癌B．腺癌C．移行细胞癌D．腺鳞癌

单选题在我国，急性胰腺炎的病因主要是A．胆结石B．过量饮酒C．暴饮暴食D．高脂血症E．高钙血症

单选题绞窄性肠梗阻的腹痛特点是

单选题乙型肝炎表面抗原阳性病人所用的手术器械，术后使用哪种处理正确A．2%戊二醛水溶液浸泡1小时B．1:100苯扎溴铵(新洁尔灭)溶液浸泡21小时C．0.2%过氧乙酸溶液浸泡30分钟D．1:1000氯己定(洗必泰)溶液浸泡1小时，煮沸10分钟E．1:1000苯扎溴铵(新洁尔灭)溶液浸泡2小时，煮沸20分钟

单选题急性肝衰竭出现肝性脑病时，不宜选用的治疗是( )(2007年)

单选题下列关于慢性肾炎高血压的治疗原则或方法，正确的是A．顽固性高血压可联合应用不同降压药B．尿蛋白定量≥1g/d者，血压应控制在130/80mmHg以下C．尿蛋白定量≤1g/L者，血压应控制在125/75mmHg以下D．血肌酐＜400gmol/L时，才能用ACEI

单选题导致心搏骤停最常见的原因有（ ）

单选题0.9%NaCl溶液和10%葡萄糖溶液对人细胞内液来说NaCl溶液和10%葡萄糖溶液对人细胞内液来说A．两者都是等渗液B．两者都是高渗液C．两者都是低渗液D．前者是低渗液、后者是高渗液E．前者是等渗液、后者是高渗液

单选题下列关于口对口人工呼吸操作的叙述，错误的是( )(2007年)

单选题诊断前列腺增生症重要的检查方法是：

单选题下述哪一体征是由尺神经损伤导致

单选题下肢静脉曲张的患者，临床表现为凹陷性水肿的最好发的部位是

单选题男性，右肾结核行右肾切除1年，近日出现尿量逐渐减少，血肌酐及尿素氮逐渐升高，最可能的原因是

单选题心肺复苏时，目前治疗室颤最有效的方法是

单选题Studies from 10 nations reveal that the rates of depression among women are twice as high as they are among men. Do women have a biological bent for depression, or are social double standards the major cause? Mental health workers have long noticed among the clinically depressed women take up a bigger proportion. Until recently, though, it was unclear whether more women than men were ill or, instead, whether more women sought help. In fact, a mounting collection of studies has confirmed that major depression is twice as common among women as it is among men. "This is one of the most consistent findings we have ever had," says Myrna M. Weissman of Columbia University. Scientists searching for explanations are challenged by the fact that a variety of cues prompt depression in different people. Sorting out which factors might have a greater influence on women has not proved easy. Both sexes stand an equal chance of inheriting major depression, so genes are most likely not to blame. Yet hormones and sleep cycles--which differ dramatically between the sexescan alter mood. Also, many workers have proposed that social discrimination might put women under high levels of stress. In 1990 an international group examines mood disorders. In the 10 nations reviewed so far, the team has found that among generations reaching maturity after 1945, depression seems to be on the rise and occurs at a younger age. Although overall incidence varies regionally, "everywhere the rates of depression among women are about twice as high as they are among men," Weissman says. In contrast, lifetime rates for manic-depressive illness do not differ according to sex or culture. Mark S. George and his colleagues at the National Institute of Mental Health (NIMH) recently studied which regions of the brain have greater blood flow during periods of depression. George found that "the brain activity of the men and women of depression looked very different. " He has since compared feelings of anger, anxiety and happiness, finding no such big a difference. Because one in five American women has a history of depression, especially as they often pursue therapy from other sources, sometimes on top of an anti-depressant clinic. Says Leibenluft: "It is remarkable how little work has been done on this subject. /

单选题关于骨与关节化脓性感染，下列哪项是错误的