单选题下列可以发生坏疽的病变是

单选题下列哪种物质既是储能物质，又是直接的供能物质

单选题不符合恶性纤维组织细胞瘤的描述是

单选题透明血栓主要发生的组织部位是

单选题There is a difference between science and technology. Science is a method of answering (1) questions; technology is a method of solving practical problems. Science has to do with discovering the facts and relationships between (2) phenomena in nature and with establishing theories that (3) to organize these facts and relationships; technology has to do with tools, techniques, and (3) for applying the findings of science. Another (5) between science and technology has to do with the progress in each. Progress in science (6) the human factor. Scientists, who seek to understand the universe and know the truth within the highest degree of (7) and certainty, cannot (8) their own or other people's likes or dislikes or to popular ideas about the fitness of things. What scientists discover may shock or (9) people-as did Darwin's theory of evolution. But even an unpleasant truth is (10) than likely to be useful; besides, we have the choice of refusing to believe it! But (11) so with technology; we do not have the choice of refusing to hear the sound produced by a supersonic aircraft flying overhead; we cannot refuse to breathe polluted air. (12) science, progress in technology must be measured (13) the human factor. The purpose of technology is to serve people—people (14) , not merely some people; and future generations, not merely those who presently wish to (15) advantage for themselves. We are all familiar with the (16) use of technology. Many people blame technology itself (17) widespread pollution, resource depletion (枯竭) and even social decay in general—so much (18) the promise of technology is " (19) " That promise is a cleaner and healthier world. If wise applications of science and technology do not (20) a better world, what else will?

单选题心房颤动时，左心房内的球形血栓是

单选题A．线粒体B．高尔基体C．胞液D．内质网

单选题肠腔内胆盐达到一定浓度后可聚合形成

单选题对于特异感觉投射系统的描述，恰当的是

单选题参与原核基因转录激活调节的基本要素不包括

单选题关于酮体的叙述，下列哪项是错误的?

单选题梗死灶呈地图状的器官是

单选题栓塞后不易导致组织梗死的器官是

单选题Data security used to be all about spending big bucks on firewalls to defend data at the network perimeter and on antivirus software to protect individual computers. Internet-based computing, or cloud computing, has changed all that, at the same time expanding exponentially the chances for data thieves and hackers. The cloud creates other opportunities too. a handful of security vendors now deliver security as a service--a one-two punch of hardware and software that monitors and manages an enterprise's data security and bills customers only for the computing power they use. "For years, security was about big companies pushing technology to their customers," says Qualys CEO and founder Philippe Courtot. "Now it's about the customers pulling precisely what they need and providing them with those resources on demand. " Qualys, a privately held company in Redwood Shores, Calif. , was among the first to embrace the service-oriented model, in 1999. Today four different modules of QualysGuard, its flagship offering, are used by more than 3500 organizations in 85 countries. The company performs more than 200 million security audits per year. Courtot knows something about opportunity. The French entrepreneur arrived in Silicon Valley in 1987 and has built a number of companies into big-time players, including Signio, an electronic-payment start-up that was eventually sold to VeriSign in a combined deal for more than $1 billion. As CEO, he rebuilt Verity and transformed cc:Mail, a once unknown firm of 12 people, into a dominant e-mail platform before Lotus acquired it in 1991. "Throughout my career, I've been able to recognize that for a technology to succeed, it must have a purpose," he says. "Technology itself has no value. It's what you do with it that counts. " Under the old paradigm, according to Courtot, enterprises overspent for stand-alone security devices that became unruly and difficult to operate over the long term He says Qualys attacks the flaws in this strategy by streamlining security and tackling most of the service delivery through the cloud. "We control the infrastructure, software updates, quality assurance and just about everything in between," he says. The firm unveiled QualysGuard in 2000. After an infusion of $ 25 million from the venture firm Trident Capital and another $ 25 million from Gourtot, Qualys tweaked the service to focus mostly on vulnerability management. Much of the company's current revenue-sales, topped $ 50 million last year--is being driving by a set of standards established by the Payment Card Industry Security Standards Council (PCISSC). "The PCI standard has been a major driver of business for all of them, especially Qualys," says Avivah Litan, a vice president and analyst at market-research firm Gartner. "When everyone has to comply, there's a lot of work to go around. /

单选题关于压力感受性反射的叙述，下列哪项不正确?

单选题每搏输出量增大时以下列哪项升高为主( ) A．收缩压 B．舒张压 C．脉压 D．平均动脉压 E．中心静脉压

单选题 G6PD缺乏症患者可放心食用 ( ) A、喹啉类抗疟药 B、黄豆 C、阿司匹林等镇痛解热药 D、磺胺药 E、蚕豆

单选题霍奇金淋巴瘤的组织学特点是（ ）

单选题患者女性，40岁，左侧腰部疼痛1年，尿中带血，时有脓尿，尿中可查见结核菌肾盂造影检查，左肾可见空洞。符合该患者疾病的诊断是

单选题伤寒小结中的伤寒细胞来源于