单选题前哨痔是指
单选题患者，男性，76岁，因不能自行排尿10小时入院。患者曾有排尿困难3年，排尿时常出现尿流中断，改变姿势或稍活动后，又能恢复排尿。夜尿3～5次。体检：一般情况好，下腹膨胀，浊音界位于脐下2指。B超膀胱内2～4cm强光团数枚。该患者的诊断是
单选题L4～5椎间盘突出，最常受累的神经根是A．L2B．L3C．L4D．L5E．S1
单选题以下病变可引起补体下降，除了
单选题下列关于手术室管理的描述正确的是
单选题
下列哪项不引起颅内压增高（ ）
A、脑水肿
B、脑脊液漏
C、脑梗塞
D、脑肿瘤
E、脑积水
单选题A．急性膀胱炎B．急性肾盂肾炎C．急性前列腺炎D．睾丸扭转E．急性附睾炎
单选题尤文肉瘤X线特殊表现为：
单选题蛛网膜下腔阻滞麻醉中最常见的并发症是
单选题
关于骨巨细胞瘤，下列哪项是错误的（ ）
A、多见于年轻人
B、病灶在骨端，局部有骨破坏
C、骨端膨胀，骨皮质破坏，侵入软组织
D、常用的手术方法是局部刮除，不易复发
E、若有恶变应截肢
单选题男，40岁，因左腰持续胀痛，高热2周入院，体检：T39℃，左腰胀痛，伴肌紧张及叩痛，尿检可见大量脓细胞，考虑左肾脓肿，进一步确诊的辅助检查是
单选题
下列哪项关于强直性脊柱炎的说法是错误的 ( )
A、发病一般在15岁以后，男性多于女性
B、早期骶髂关节及下腰部痛，休息时减轻，活动时加重，后期腰部僵硬，活动受限，逐渐向上发展，可有驼背畸形
C、病变可遍及全身各关节，并出现关节僵硬和强直
D、X线片示两侧骶髂关节密度增高，椎间小关节硬化，脊柱呈竹节样改变
E、是属结缔组织的血清阴性反应疾病
单选题3岁男性患者，因肺炎并发休克，24小时尿量350m1，血肌酐325μmol／L，临床上考虑出现急性肾小管坏死。则其尿液诊断指标检查最可能是
单选题60岁男性，六个月前因车撞伤右大腿致右股骨开放骨折，在当地医院行内固定术后，切口有少量脓汁渗出，创口肉芽组织突起。X线下片：骨折断端有层状致密新骨形成，其中骨折片边界清楚，最可能的诊断：
单选题紧贴肱骨干中、下1/3走行的神经是（ ）
单选题A．第1～2肋B．第2～4肋C．第4～7肋D．第8～10肋
单选题
癌的概念是
A、来自肌肉组织的肿瘤
B、来自肌肉组织的恶性肿瘤
C、来自间叶组织的恶性肿瘤
D、来自上皮组织的恶性肿瘤
E、来自平滑肌的恶性肿瘤
单选题卧床、无发热或异常消耗的成年男性病人每天最低热卡需要是A．15～20kcaL/kg体重B．25～30kcal/kg体重C．30～50kcal/kg体重D．50～60kcal/kg体重E．75kcal/kg体重
单选题It may turn out that the "digital divide"--one of the most fashionable political slogans of recent years--is largely fiction. As you will recall, the argument went well beyond the unsurprising notion that the rich would own more computers than the poor. The disturbing part of the theory was that society was dividing itself into groups of technology "haves" and "have-nots" and that this segregation would, in turn, worsen already large economic inequalities. It is this argument that is either untrue or wildly exaggerated. We should always have been suspicious. After all, computers have spread quickly because they have become cheaper to buy and easier to use. Falling prices and skill requirements suggest that the digital divide would spontaneously shrink--and so it has. Now, a new study further discredits the digital divide. The study, by economist David Card of the University of California, Berkeley, challenges the notion that computers have significantly worsened wage inequality. The logic of how this supposedly happens is straightforward: computers raise the demand for high-skilled workers, increasing their wages. Meanwhile, computerization--by automating many routine tasks--reduces the demand for low-skilled workers and, thereby, their wages. The gap between the two widens. Superficially, wage statistics support the theory. Consider the ratio between workers near the top of the wage distribution and those near the bottom. Computerization increased; so did the wage gap. But wait, point out Card and DiNardo. The trouble with blaming computers is that the worsening of inequality occurred primarily in the early 1980s. With computer use growing, the wage gap should have continued to expand, if it was being driven by a shifting demand for skills. Indeed, Card and DiNardo find much detailed evidence that contradicts the theory. They conclude that computerization does not explain "the rise in U.S. wage inequality in the last quarter of the 20th century." The popular perception of computers' impact on wages is hugely overblown. Lots of other influences count for as much, or more. The worsening of wage inequality in the early 1980s, for example, almost certainly reflected the deep 1981--1982 recession and the fall of inflation. Companies found it harder to raise prices. To survive, they concluded that they had to hold down the wages of their least skilled, least mobile and youngest workers. The "digital divide" suggested a simple solution (computers) for a complex problem (poverty). With more computer access, the poor could escape their lot. But computers never were the source of anyone's poverty and, as for escaping, what people do for themselves matters more than what technology can do for them.
单选题
男性农民，34岁，因右上腹痛伴发烧2周来门诊检查。体检:急性病容，体温38℃，巩膜不黄，肝区叩痛明显，肝脾未扪及。X线透视右膈肌抬高，WBC12×10的9次方/L。进一步应首选哪项检查?
A、肝核素扫描
B、肝动脉造影
C、B超
D、静脉胆道造影
E、诊断性肝穿刺