单选题嵌顿性疝手法复位后，护士应特别注意观察（ ）

单选题甲亢术后最危急的并发症是

单选题A．神经根型颈椎病B．脊髓型颈椎病C．交感神经型颈椎病D．椎动脉型颈椎病

单选题肝包虫病临床上最常用的治疗方法为

单选题肠内营养的适应证不包括

单选题胸外心脏挤压，恰当操作时，动脉压可达

单选题A bite of a cookie containing peanuts could cause the airway to constrict fatally. Sharing a toy with another child who had earlier eaten a peanut butter and jelly sandwich could raise a case of hives. A peanut butter cup dropped in a Halloween bag could contaminate the rest of the treats, posing an unknown risk. These are the scenarios that "make your bone marrow turn cold" according to L. Val Giddings, vice president for food and agriculture of the Biotechnology Industry Organization. Besides representing the policy interests of food biotech companies in Washington, D. C., Giddings is the father of a four-year-old boy with a severe peanut allergy. Peanuts are only one of the most allergenic foods; estimates of the number of people who experience a reaction to the beans hover around 2 percent of the population. Giddings says that peanuts are only one of several foods that biotechnologists are altering genetically in an attempt to eliminate the proteins that do great harm to some people's immune systems. Although soy allergies do not usually cause life-threatening reactions, the scientists are also targeting soybeans, which can be found in two thirds of all manufactured food, making the supermarket a minefield for people allergic to soy. Biotechnologists are focusing on wheat, too, and might soon expand their research to the rest of the "big eight" allergy-inducing foods: tree nuts, milk, eggs, shellfish and fish. Last September, for example, Anthony J. Kinney, a crop genetics researcher at DuPont Experimental Station in Wilmington, Del., and his colleagues reported using a technique called RNA interference (RNAi) to silence the genes that encode p34, a protein responsible for causing 65 percent of all soybean allergies. RNAi exploits the mechanism that cells use to protect themselves against foreign genetic material; it causes a cell to destroy RNA transcribed from a given gene, effectively turning off the gene. Whether the public will accept food genetically modified to be low-allergen is still unknown. Courtney Chabot Dreyer, a spokesperson for Pioneer Hi-Bred International, a subsidiary of DuPont, says that the company will conduct studies to determine whether a promising market exists for low allergen soy before developing the seeds for sale to farmers. She estimates that Pioneer Hi-Bred is seven years away from commercializing the altered soybeans. Doug Gurian-Sherman, scientific director of the biotechnology project at the Center for Science in the Public Interest—a group that has advocated enhanced Food and Drug Administration oversight for genetically modified foods—comments that his organization would not oppose low-allergen foods if they prove to be safe. But he wonders about "identity preservation" a term used in the food industry to describe the deliberate separation of genetically engineered and no nengineered products. A batch of nonengineered peanuts or soybeans might contaminate machinery reserved for low-allergen versions, he suggests, reducing the benefit of the gene-altered food. Such issues of identity preservation could make low-allergen genetically modified foods too costly to produce, Chabot Dreyer admits. But, she says, "it's still too early to see if that's true. /

单选题肛瘘行挂线疗法的最大优点是（ ）

单选题A．酒窝征 B．橘皮征C．卫星结节 D．乳头凹陷

单选题与宫颈癌密切相关的因素是

单选题采用普鲁卡因局部麻醉时，可以预防病人出现局麻药毒性反应的措施是：（ ）

单选题患者刘某，20岁，自述气候变化而出现咳嗽、咳痰、胸闷、呼气性呼吸困难，烦躁不安伴哮鸣音，发绀明显，视诊桶状胸，诊断为支气管哮喘。如果对刘某进行预防性治疗常选用（ ）

单选题 门诊一位病人家属向医生询问患食管癌后，其治疗与预后同什么有关，医生回答与下列因素关系最密切，但除了 A、病程的长短 B、病变的长度 C、吞咽困难的程度 D、有无远处转移 E、肿瘤侵犯的深度及有无局部淋巴结转移

单选题革兰阳性细菌败血症发热的特点

单选题急性腹膜炎时，病情恶化的征象是

单选题急性肾功能衰竭多尿期后期容易出现的水电解质酸碱失衡是（ ）

单选题下列关于休克微循环收缩期生理变化的描述，错误的是

单选题男性，25岁，车祸伤及右髋部，右髋痛，不敢活动右下肢，有下肢呈屈曲、内收、内旋和短缩畸形。最可能的诊断是

单选题常导致急性肾功能衰竭的肾小球肾炎是

单选题A．放射治疗B．放射治疗加手术治疗C．手术治疗D．化学治疗加手术治疗