单选题急性血源性骨髓炎晚期病理改变是（ ）

单选题A．小肠肿瘤B．右侧结肠癌C．节段性肠炎D．左侧结肠癌

单选题癌变可能性最小的直肠息肉是

单选题不符合弥漫性膜性肾小球肾炎的描述是

单选题The history of the computer in the twentieth century is one of dramatic adaptation and expansion. The computer had modest beginnings in areas where it was used as a specialist tool. The first electronic computer was built in the 1930s and was solely for the use of undergraduate students in Iowa State University to handle mathematical computations in nuclear physics. In the 1960s an early version of the Internet, ARPPANET was used in computer science and engineering projects. However, only 10 years later computers were starting to change our life style, the way we do business and many other things and by the late 1980s' networks were expanding to embrace sections of the general public. Computerization has changed US high school education in many ways. Three different changes that consider being important. The first is the use of the computer as teaching aid for teachers. The next is the massive data storage and fast data retrieval facilitated by computer. Then comes the changes brought about by the introduction of simulation software. How prevalent is the use of computers in schools! As recently as the early 1980s only 20% of secondary science teachers in the USA were using microcomputers. However, since then high schools in the US have computer zed rapidly. By 1987, schools had acquired about 1.5 million computers with 95% of public schools having at least one computer. Computers can be used as teaching aids both in schools and in homes. In schools, for example, teachers can plug a computer into an especially equipped overhead projector to bring texts, graphics, sound and videos into a classroom. By these multimedia computer animations, teachers can more readily attract and retain students' attention. Ann concludes that computer aided teaching can attract and motivate students who were dropping out when more traditional methods were being used. Let us now turn to the Internet. This is a global network connecting many local networks. Over the Internet, high school students can retrieve information and databases from every networked library around the world in seconds. The World Wide Web provides an easy way to access hard-to-find information. Students can now reach any library through the global network and find what they want. The final step is to download the scanned image. Though the slow transmission of signal through the network is a major limiting factor, it can still save us much time in finding useful information, and thus it is an invaluable tool to both high school teachers and students.

单选题关于胆管癌，下列哪项叙述不正确

单选题下列不符合弥漫性系膜增生性肾小球肾炎的病变是

单选题手术中，出现反射性血压下降和心动过缓，此现象发生在

单选题A．下肢内收畸形 B．下肢外旋畸形 C．两者均有 D．两者均无

单选题长期肠外营养支持后，出现肝功能损害的主要原因是

单选题A．门静脉炎 B．细菌性肝脓肿 C．两者均可 D．两者均不可

单选题关于腹部闭合性损伤的叙述，不恰当的是

单选题男，28岁，右手食指被电锯切割离断，立即将患者送到医院行断指再植。其断指的保存方法应该是

单选题下述哪些骨折出现骨折的专有体征

单选题最多见的肠套叠是

单选题手术进行中的无菌原则哪项不对（ ）

单选题下列关于代谢性酸中毒的叙述，哪项是错误的A．是由体内减少引起的B．最突出的表现是呼吸变慢、变浅C．呼气中可有酮味D．血清pH降低E．症状较轻者，一般不需应用碱剂治疗

单选题急性血源性骨髓炎大块死骨形成的主要原因是

单选题静脉性溃疡好发于

单选题下列哪项是急性出血性坏死性肠炎的手术指征（ ）