单选题患者，男性，60岁，间断性排尿中断5天，腹平片提示膀胱区有直径2.5cm椭圆形致密影，追问病史，有尿频伴排尿不畅4年，最可能的诊断为
单选题A．柏油样便 B．果酱样便C．黏液便 D．腹泻E．便秘
单选题下列对于输血后溶血反应的处理，错误的是
单选题Budd-Chiari综合征最好的治疗是
单选题股骨颈囊内骨折较为严重的后期并发症是
单选题侵蚀性葡萄胎与绒毛膜癌的主要区别是
单选题直肠癌距肛门7cm，最常用的根治术术式是
单选题在我国引起门静脉高压症的最主要原因是
单选题属于骨折功能复位的是
单选题处理头部创伤时必须遵循的外科原则
单选题下列关于输血速度的描述不正确的是
单选题In some ways, the United States has made spectacular progress. Fires no longer destroy 18,000 buildings as they did in the Great Chicago Fire of 1871, or kill half a town of 2,400 people, as they did the same night in Peshtigo, Wisconsin. Other than the Beverly Hill Supper Club fire in Kentucky in 1977, it has been four decades since more than 100 Americans died in a fire. But even with such successes, the United States still has one of the worst fire death rates in the world. Safety experts say the problem is neither money nor technology, but the indifference of a country that just will not take fires seriously enough. American fire departments are some of the world's fastest and best-equipped. They have to be. The United States has twice Japan's population, and 40 times as many fires. It spends far less on preventing fires than on fighting them. And American fire-safety lessons are aimed almost entirely at children, who die in disproportionately large numbers in fires but who, contrary to popular myth, start very few of them. Experts say the fatal error is an attitude that fires are not really anyone's fault. That is not so in other countries, where both public education and the law treat fires as either a personal failing or a crime. Japan has many wood houses; of the estimated 48 fires in world history, that burned more than 10,000 buildings, Japan has had 27. Penalties for causing a severe fire by negligence can be as high as life imprisonment. In the United States, most education dollars are spent in elementary schools. But the lessons are aimed at a too limited audience; just 9 percent of all fire deaths are caused by children playing with matches. The United States continues to rely more on technology than laws or social pressure. There are smoke detectors in 85 percent of all homes. Some local building codes now require home sprinklers. New heaters and irons shut themselves off if they are tipped.
单选题休克病人在补充足够液体后，血压偏低，中心静脉压正常，应给予
单选题关于胫腓骨骨折的叙述，下列哪项是错误的
单选题患者，男，45岁。4小时前感上腹部胀痛伴恶心，呕吐一次为胃内容物，1小时来右侧腹痛，有便意但未能排便，疑似急性阑尾炎。下列体征中，对确诊最有价值的是( )(2008年)
单选题大多数儿童上尿路结石的表现是
单选题下列选项中，支持肾小球源性血尿的有
单选题当病人出现血容量不足的症状时，说明在短期内体液丧失至少已达体重的A．3%B．5%C．7%D．10%E．15%
单选题高血压病人麻醉前应
单选题男，58岁，吸烟史30年，刺激性咳嗽并痰中带血1个月，X线检查示右肺上叶前段呈炎性征象，痰细胞学检查找到腺癌细胞，体检发现右锁骨上淋巴结肿大。