单选题化脓性骨髓炎是指以下哪种组织的化脓性感染

单选题麻醉中发现CO2蓄积，如排出速度过快，最可能出现的临床表现是A．血压下降，呼吸暂停B．血压下降，呼吸变快C．血压上升，呼吸变快D．血压上升，呼吸变慢

单选题为进一步明确诊断，哪项检查是最不必要的

单选题Buerger。试验的方法是

单选题根据部位，下列哪种胃溃疡最为多见( )(2000年)

单选题慢性硬化性肾小球肾炎引起肾功能衰竭的主要原因是

单选题肥皂刷手法中需将上肢浸泡在70％乙醇内，其浸泡范围至少是手至肘上

单选题下列不符合局灶性节段性肾小球肾炎病变特点的是

单选题胃十二指肠瘢痕性幽门梗阻病人需进行充分的术前准备，术前准备中，下列哪项是错误的（ ）

单选题关于胸部外伤，下列哪项是正确的

单选题急性骨髓炎最常发生的部位是

单选题A．圆韧带内的小凹动脉B．股骨干滋养动脉升支C．旋股内、外侧动脉的分支D．骺外侧动脉

单选题导致上消化道大出血最常见的原因是

单选题It is a wise father that knows his own child, but today a man can boost his paternal (fatherly) wisdom— or at least confirm that he's the kid's dad. All he needs to do is shell out $30 for paternity testing kit (PTK) at his local drugstore—and another $120 to get the results. More than 60,000 people have purchased the PTKs since they first became available without prescriptions last year, according to Doug Fogg, chief operating officer of Identigene, which makes the over-the-counter kits. More than two dozen companies sell DNA tests directly to the public, ranging in price from a few hundred dollars to more than $ 2,500. Among the most popular: paternity and kinship testing, which adopted children can use to find their biological relatives and families can use to track down kids put up for adoption. DNA testing is also the latest rage among passionate genealogists—and supports businesses that offer to search for a family's geographic roots. Most tests require collecting cells by swabbing saliva in the mouth and sending it to the company for testing. All tests require a potential candidate with whom to compare DNA. But some observers are skeptical. "There is a kind of false precision being hawked by people claiming they are doing ancestry testing," says Troy Duster, a New York University sociologist. He notes that each individual has many ancestors—numbering in the hundreds just a few centuries back. Yet most ancestry testing only considers a single lineage, either the Y chromosome inherited through men in a father's line or mitochondrial DNA, which is passed down only from mothers. This DNA can reveal genetic information about only one or two ancestors, even though, for example, just three generations back people also have six other great-grandparents or, four generations back, 14 other great-great-grandparents. Critics also argue that commercial genetic testing is only as good as the reference collections to which a sample is compared. Databases used by some companies don't rely on data collected systematically but rather lump together information from different research projects. This means that a DNA database may have a lot of data from some regions and not others, so a person's test results may differ depending on the company that processes the results. In addition, the computer programs a company uses to estimate relationships may be patented and not subject to peer review or outside evaluation.

单选题下列关于输血速度的描述不恰当的是

单选题22岁女性患者，水肿伴进行性少尿3周，血压165/105mmHg，血肌酐350μmol/L，血红蛋白100g/L尿蛋白(+++)，红细胞(++)，抗GBM抗体阳性，诊断为急进性肾炎。应立即使用下列哪种治疗

单选题治疗烧伤休克的主要措施是

单选题A．乳腺囊性增生病B．乳房纤维腺瘤C．乳管内乳头状瘤D．乳癌E．乳房肉瘤

单选题患儿10岁，胫骨中上段慢性骨髓炎，一般情况好，体温不高，局部有流脓窦道，X线片有4cm长整段死骨，周围有不连续包壳。当前的主要治疗是A．手术摘除死骨，肌瓣填塞消灭死腔B．手术摘除死，填入庆大霉素链，三周后取出，松质骨植入C．手术摘除死骨，植入细塑料管，每口经管滴入抗生素D．患肢长腿石膏管型固定，开窗换药E．局部换药，保持引流通畅

单选题治疗尿路感染，为了加强和巩固疗效，下面哪项是恰当的