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nt D

A. 百分吸收系数
B. 比旋度
C. 折光率
D. 熔点
E. 沸点

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对UV法进行灵敏度考查时,下列说法正确的是

A. 用3σb来估计灵敏度的大小
B. 用100%来估计灵敏度的大小
C. 用实际的最低检测浓度表示
D. 用2σb来估计灵敏度的大小
E. 以上都不是

Although "naming rights" have proliferated in American higher education for the past several decades, the phenomenon has recently expanded to extraordinary lengths. Anything to get an extra dollar out of donors is fair game. I know colleges and universities sorely need to raise funds in these times of fiscal constraints, but things have gotten a bit out of hand. Universities and colleges have long been named after donors-think of Harvard, Yale, Brown, and many others. John Harvard would hardly get a bench named after him today, given the modesty of his gift of books for the library back in the seventeenth century. Now it takes much more to get one’s name on a college. One institution, Rowan University of New Jersey, changed its name (from Glassboro State College) not long ago when a large donation was made. Buildings, too, have been affected. Traditionally, they were named after people such as distinguished scholars or visionary academic leaders; now they’re often named after big donors. Why is all of this happening now The main motivation for the naming frenzy is, of course, to raise money. Donors love to see their names, or the names of their parents or other relatives, on buildings, schools, institutions, professorships, and the like. Increasingly, corporations and other businesses also seek to benefit from having their names on educational facilities. Today, no limits seem to exist on what can be named. If something does not have a name, it is up for grabs—a staircase, a pond, or a parking garage. Once all the major facilities have titles, lesser things go on the naming auction block. Colleges and universities, public and private, are all under increased pressure to raise money, and naming brings in cash. It is unproductive. Separate branding weakens the focus and mission of an institution and perhaps even its broader reputation. It confuses the public, including potential students, and feeds the idea that the twenty-first-century university is simply a confederation of independent entrepreneurial domains. The trends we see now in the United States, and perhaps tomorrow in other countries, will inevitably weaken the concept of the university as an institution that is devoted to the search for truth and the transmission of knowledge. All this naming distracts from the mission of an institution that has almost a millennium of history and cheapens its image. It is a sad symbol indeed of the commercialization and entrepreneurialism of the contemporary university. From this passage, we can learn that the author holds a(n) ______ attitude towards the current naming phenomenon in American higher education.

A. supportive
B. critical
C. indifferent
D. sarcastic

对UV法进行精密度考查时,试验数据的相对标准差一般不应大于

A. 1%
B. 2%
C. 3%
D. 4%
E. 5%

Even Intelligent People Can Fail1 The striking thing about the innovators who succeeded in making our modern world is how often they failed. Turn on a light, take a photograph, watch TV, search the Web, jet across the Pacific Ocean, talk on a cellphone (手机). The innovators who left us these things had to find the way to success through a maze (错综复杂) of wrong turns.2 We have just celebrated the 125th anniversary of American innovator Thomas Edison’s success in heating a thin line to white-hot heat for 14 hours in his lab in New Jersey, US. He did that on October 22, 1879, and followed up a month later by keeping a thread of common cardboard alight (点亮着的) in an airless space for 45 hours. Three years later he went on to light up half a square mile of downtown Manhattan, even though only one of the six power plants in his design worked when he turned it on, on September 4, 1882.3 "Many of life’s failures," the supreme innovator said, "are people who did not realize how close they were to success when they gave up." Before that magical moment in October 1879, Edison had worked out no fewer than 3,000 theories about electric light, but in only two cases did his experiments work.4 No one likes failure, but the smart innovators learn from it. Mark Gumz, the head of the camera maker Olympus America Inc, attributes some of the company’s successes in technology to understanding failure. His popular phrase is: "You only fail when you quit."5 Over two centuries, the most common quality of the innovators has been persistence. That is another way of saying they had the emotional ability to keep up what they were doing. Walt Disney, the founder of Disneyland, was so broke after a succession of financial failures that he was left shoeless in his office because he could not afford the US$1.50 to get his shoes from the repair shop. Pioneering car maker Henry Ford failed with one company and was forced out of another before he developed the Model T car.6 Failure is harder to bear in today’s open, accelerated world. Hardly any innovation works the first time. But an impatient society and the media want instant success. When American music and movie master David Geffen had a difficult time, a critic said nastily that the only difference between Geffen Records (Geffen’s company) and the Titanic (the ship that went down) was that the Titanic had better music. Actually, it wasn’t. After four years of losses, Geffen had so many hits (成功的作品) he could afford a ship as big as the Titanic all to himself. Paragraph 5______

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