单选题A．肾小球滤过率450μmol／L但707μmol／L

单选题股骨颈化脓性骨髓炎容易并发化脓性髋关节炎的主要原因是

单选题下述哪项不是体外冲击波碎石术的并发症

单选题在下列与肾炎相关的炎症介质中，哪一个是近年来发现的更重要的炎症介质A．补体B．凝血因子C．中性蛋白酶D．血管活性肽E．血管活性胺

单选题下列哪种病菌引起的感染是特异性感染?

单选题26岁男性患者，临床诊断为急性肾炎，则下列哪项临床表现是该患者必有的

单选题有关肱骨外上髁炎，下列哪项是错误的

单选题女性，36岁，1年来乏力、易疲倦、腰部不适，有时下肢浮肿，未检查。2个月来加重，伴纳差，血压增高为150/100mmHg，下肢轻度浮肿。尿蛋白(+)，沉渣RBC5～10个/HP，偶见颗粒管型，血化验Hb90g/L，血肌酐400μmol/L。

单选题腹股沟管的走行方向是

单选题诊断门静脉高压症最有意义的征象是

单选题We have known for a long time that the organization of any particular society is influenced by the definition of the sexes and the distinction drawn between them. But we have realized only recently that the identity of each sex is not so easy to pin down, and that definitions evolve in accordance with different types of culture known to us, that is, scientific discoveries and ideological revolutions. Our nature is not considered as immutable, either socially or biologically. As we approach the beginning of the 21st century, the substantial progress made in biology and genetics is radically challenging the roles, responsibilities and specific characteristics attributed to each sex, and yet, scarcely twenty years ago, these were thought to be "beyond dispute". We can safely say, with a few minor exceptions, that the definition of the sexes and their respective functions remained unchanged in the West from the beginning of the 19tb century to the 1960s. The role distinction, raised in some cases to the status of uncompromising dualism on a strongly hierarchical model, lasted throughout this period, appealing for its justification to nature, religion and customs alleged to have existed since the dawn of time. The woman bore children and took care of the home. The man set out tc conquer the world and was responsible for the survival of his family, by satisfying their needs in peacetime and going to war when necessary. The entire world order rested on the divergence of the sexes. Any overlapping or confusion between the roles was seen as a threat to the time-honored order of things. It was felt to be against nature, a deviation from the norm. Sex roles were determined according to the "place" appropriate to each. Women's place was, first and foremost, in the home. The outside world, i.e. workshops, factories and business firms, belonged to men. This sex-based division of the world (private and public) gave rise to a strict dichotomy between the attitudes, which conferred on each its special identity. The woman, sequestered at home, "cared, nurtured and conserved". To do this, she had no need to be daring, ambitious, tough or competitive. The man, on the other hand, competing with his fellow men, was caught up every day in the struggle for survival, and hence developed those characteristics which were thought natural in a man. Today, many women go out to work, and their reasons for doing so have changed considerably. Besides, the traditional financial incentives, we find ambition and personal fulfillment motivating those in the most favorable circumstances, and the wish to have a social life and to get out of their domestic isolation influencing others. Above all, for all women, work is invariably connected with the desire for independence.

单选题一患者，男性，25岁，因外伤造成右侧髂骨骨折伴耻骨联合分离，急诊入院，伤后8小时无小便，一般情况好。考虑可能存在下列哪种情况

单选题胃癌晚期血行转移最多见的部位是

单选题老年人发生肠梗阻的原因最常见的是

单选题Raymond Arth knows he should feel better about the economy. His company hasn't returned to its pre-recession revenues selling its wares to the makers of RVs and manufactured homes, but it is making a profit again. Like too many other small-business proprietors, Arth doesn't fully trust this economic recovery. While he says he's "guardedly optimistic" about it, his actions are all about the first half of that phrase, In the Labor Department's latest snapshot of the country's job market, the private sector added 268,000 jobs in April, the largest gain in five years and the third consecutive month of solid job growth. Yet a more sobering account of where the economy might be headed—and arguably a more accurate barometer of the near-term future—is the monthly report published by the National Federation of Independent Business. After all, it's small businesses, which have created two out of every three new jobs the economy has added since the early 1990s, that historically have led the country out of recessions. And it's the owners of small businesses that the NFIB surveys each month for its Small Business Optimism Index. On that front the news is anything but good. The index is down for the second straight month. Fewer small-business owners expect conditions to improve over the next half year a drop of 18 percentage points from January. The bulk of new hiring must be happening inside larger corporations, since their smaller counterparts on Main Street say they are generally reluctant to create new jobs. That aptly sums up the sentiments of Scott Lipps, the president of the Sleep Tite Mattress Factory. Before the downturn, Lipps says, his sales were about evenly split between his medical clients (hospitals and nursing homes) and consumers buying mattresses through a factory outlet. But sales to the general public plummeted starting in 2008. "The families affected most by the economy have stopped buying," Lipps says. "And those who say 'We have to have a new mattress' are downgrading to a medium-quality mattress. " Despite a 20 percent drop in sales, Lipps and his partner tried to forestall the inevitable by putting up $ 70,000 of their own money. But in 2010 they laid off three of their 18 full-time employees. "It should have happened in 2009, but we let our hearts run the company instead of our billfolds," Lipps says. In Bartlesville, Mat Saddoris is feeling relatively more upbeat. Saddoris is the third-generation owner of United Linen, a restaurant-supply company that cut its workforce by more than 10 percent during the downturn's darkest days. Revenues are back up to pre-2008 levels, and United Linen is back to its pre-recession staffing of 135 employees. But will he take the risk of growing the company? "I talk to my customers and they're optimistic—to a point," he says. "They've all come back from the pits, if you will, and things have been getting better in the past six or seven months. " But, he says, "I don't think they're ready to announce that things have turned around. /

单选题预后较好的狼疮性肾小球肾炎是

单选题天于骶椎麻醉(骶麻)，下列哪项是正确的A．是硬膜外麻醉B．别名为鞍区阻滞C．易引起马尾综合征D．不易发生局麻药巾毒E．睾丸切除术可用这种麻醉方法

单选题股骨干1／3骨折出现下列哪种畸形

单选题有关盆腔脓肿的治疗错误的是

单选题引起低渗性缺水的原因有