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A.A news server, a FTP server and a web server.
B.A streaming media server, a news server and a web server.
C.A FTP server and a news server.
D.A news and FTP server, a web server and a streaming media server.
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更多“Warren is a system administrator for a small network.Warren has been asked whether the”相关的问题
第1题
In 1983, Warren began successfully treating sufferers with antibiotics and bismuth.
A．Y
B．N
C．NG
第3题
What happened to Joy Warren's Buick？
A．It had four inches of water in it.
B．One of its windows couldn't be opened.
C．It was pulled out of the water and set on the shore.
D．It sank to the bottom of the river.
第4题
MRS WARREN: (piteously) Oh, my darling, how can you be so hard on me？ Have I no rights over you as your mother？ VIVIE: Are you my mother？ MRS WARREN; (appalled) Am I your mother! Oh, Vivie! VIVIE : Then where are our relatives？ my father？ our family friends？ You claim the rights of a mother ; the right to call me fool and child; to speak to me as no woman in authority over me at college dare speak to me; to dictate my way of life; and to force on me the acquaintance of a brute whom anyone can see to be the most vicious sort of London man about town. Before I give myself the trouble to resist such claims, I may as well find out whether they have any real existence. MRS WARREN: (distracted, throwing herself on her knees) Oh no, no. Stop, stop. I am your mother; I swear it. Oh , you can t mean to turn on me—my own child \ it s not natural. You believe me, don t you？ Say you believe me. VIVIE : Who was my father？ MRS WARREN: You don t know what you re asking. I can t tell you. VIVIE: (determinedly) Oh yes you can, if you like. I have a right to know; and you know very well that I have that right. You can refuse to tell me, if you please, but if you do, will see the last of me tomorrow morning. MRS WARREN: Oh, it s too horrible to hear you talk like that. You wouldnt—you couldnt leave me. VIVIE: (ruthlessly) Yes, without a moment s hesitation, if you trifle with me about this. (Shivering with disgust) How can I feel sure that I may not have the contaminated blood of that brutal waster in my veins？ MRS WARREN: No, no. On my oath it s not he, nor any of the rest that you have ever met. I m certain of that, at least. Vivie s eyes fasten sternly on her mother as the significance of this flashes on her. Questions:
Identify the author and the title of the play.
第5题
A triumph for scientific freedom
This week's Nobel Prize winners in medicine—Australians Barry J. Marshall and J. Robin Warren— toppled the conventional wisdom in more ways than one. They proved that most ulcers were caused by a lowly bacterium, which was an outrageous idea at the time. But they also showed that if science is to advance, scientists need the freedom and the funding to let their imaginations roam.
Let's start with the Nobel pair's gut instincts. In the late 1970s, the accepted medical theory was that ulcers were caused by stress, smoking, and alcohol. But when pathologist Warren cranked up his microscope to a higher-than-usual magnification, he was surprised to find S-shaped bacteria in specimens taken from patients with gastritis. By 1982, Marshall, only 30 years old and still in training at Australia's Royal Perth Hospital, and Warren, the more seasoned physician to whom he was assigned, were convinced that the bacteria were living brazenly in a sterile, acidic zone—the stomach—that medical texts had declared uninhabitable.
Marshall and Warren's attempts to culture the bacteria repeatedly failed. But then they caught a lucky breaker rather, outbreak. Drug-resistant staph was sweeping through the hospital. Preoccupied with the infections, lab techs left Marshall's and Warren's petri dishes to languish in a dark, humid incubator over the long Easter holiday. Those five days were enough time to grow a crop of strange, translucent microbes.
Marshall later demonstrated that ulcer-afflicted patients harbored the same strain of bacteria. In 1983, he began successfully treating these sufferers with antibiotics and bismuth (the active ingredient in Pepto-Bismol). That same year, at an infectious disease conference in Belgium, a questioner in the audience asked Marshall if he thought bacteria caused at least some stomach ulcers. Marshall shot back that he believed bacteria caused all stomach ulcers.
Those were fighting words. The young physician from Perth was telling the field's academically pedigreed experts that they had it all wrong. "It was impossible to displace the dogma," Marshall explained to me in a jaunty, wide-ranging conversation several years ago. "Their agenda was to shut me up and get me out of gastroenterology and into general practice in the outback."
At first, Marshall couldn't produce the crowning scientific proof of his claim: inducing ulcers in animals by feeding them the bacterium. So in 1984, as he later reported in the Medical Journal of Australia. "a 32-year-old man, a light smoker and social drinker who had no known gastrointestinal disease or family history of peptic ulceration"—a superb test subject, in other words—" swallowed the growth from' a flourishing three-day culture of the isolate."
The volunteer was Marshall himself, Five days later, and for seven mornings in a row, he experienced the classic and unpretty symptoms of severe gastritis.
Helicobacter pylori have since been blamed not only for the seething inflammation ,of ulcers but also for virtually all stomach cancer. Marshall's antibiotic treatment has replaced surgery as standard care. And the wise guy booed off the stage at scientific meetings has just won the Nobel Prize.
What does all this have to do with scientific freedom？ Today, US government funding favors "hypothesis-driven" rather than "hypothesis-generating" research. In the former, a scientist starts with a safe supposition and conducts the experiment to prove or disprove the idea. "If you want to get research funding; you better make sure that you've got the experiment half done," Marshall told me. "You have to prove it works before they'll fund you to test it out."
By contrast, in hypothesis-generating research, the scientist inches forward by hunch, gathering clues and speculating on their meaning. The payoff is never
A．Y
B．N
C．NG
第6题
B.1980年，CMU为DEC设计了一套名为XCON的“专家系统”，取得巨大成功，人工智能研究进入第二次高潮
C.1943年，美国心理学家沃伦·麦卡洛克(Warren McCulloch)和数理逻辑学家沃尔特·皮兹(Walter Pitts)发表了《神经活动中内在思想的逻辑演算》，提出了人工神经网络的概念和神经元模型，成为人工智能诞生的标志
D.1973年，英国科学研究委员会(SRC)向英国政府提交了一份由知名应用数学家JamesLighthill爵士带头起草的报告，对人工智能研究各个领域的实际进展提出了质疑，人工智能研究进入第一个冬天
