利用中间件Middleware的高层 【11】 可以将底层网络协议与实现技术隔离开来

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问题:

利用中间件Middleware的高层 【11】 可以将底层网络协议与实现技术隔离开来,使得程序员可以将精力集中在应用软件编程上。

考点:计算机等级考试数据库技术三级数据库技术笔试
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心理距离

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阅读理解。

     BEIJING, Nov. 30 - The Bird's Nest may have been built for last year's Summer Games but Beijing's

Olympic stadium will soon be aiming at fans of winter sports.

     As temperatures have begun to drop in recent weeks, so too has the number of visitors to the

80,000-seater venue, which cost 3.6 billion yuan ($527 million) to build.

     And, fearing another harsh (寒冷的) winter, National Stadium Co Ltd, which owns the Bird's Nest,

yesterday planed to spend 50 million yuan on a "snow festival".  

     From Dec 19, visitors will be able to pay 120 yuan to enjoy skiing and snowboarding, among other

things, on its newly constructed slopes.

     The stadium owners expect to attract more than 20,000 visitors a day - twice as many as it currently

does-during the two-month festival, which will include events for both the Western and Chinese new years.

     Officials revealed it would take just 5,000 visitors a day to cover the costs of the project.

     "It's not a bad idea. You can ski on man-made snow in Dubai, so why not here?" said Heiko Grasse, a

tourist from Germany, yesterday.

     Famous outdoor equipment makers and local brands are in talks over sponsorship for the event, the

Bird's Nest owners said yesterday, while the capital's television network will also provide 500 hours of

coverage.

      "The Bird's Nest will not have a cold winter again," Wu Jingjun, the new president of National Stadium

Co Ltd, told China Daily yesterday. "We will create seasonal events almost every month from now on with

assistance from the government and, importantly, the public."

      Yang Cheng, a newly appointed vice-president of National Stadium Co Ltd, said the snow festival would run

for five consecutive winters if successful.

1. How many people visit The Bird's Nest a day before the"snow festival"?

A. About 80,000.

B. About 20,000.

C. About 10,000.

D. About 5,000.

2. Which of the following is TRUE according to the text?

A. The"snow festival" will attract more visitors from China than the Western countries.

B. People aren't allowed to visit The Bird's Nest before Dec 19.

C. The"snow festival" would run for at least five winters.

D. More than 2.4 million yuan a day is expected to be made in the"snow festival".

3. What does Wu Jingjun mean by saying"The Bird's Nest will not have a cold winter again"?

A. The Bird's Nest will be kept at high temperatures in winter.

B. Winter Olympic Games will be held in The Bird's Nest.

C. The"snow festival" will provide many events in winter.

D. The Bird's Nest will get much more assistance from the government.

4. Which of the following may NOT be included in the"snow festival" events?

A. A football game.

B. Skiing.

C. Snowboarding.

D. A New Year's Party.

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下列物质中,属于半导体的是(  )

A.锗

B.铁

C.铜

D.钨

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血栓性浅静脉炎多发于:

A.上肢静脉

B.下肢静脉

C.胸壁静脉

D.颈静脉

E.面部静脉

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全国政协委员梁晓声自20世纪90年代后期转向非虚构写作,从社会小切口观察、思考转型社会的生态。他说:“作家应该手握两支笔,一方面写文学作品,一方面对社会发言”。这说明()

①文学创作要适应新情况、回答新问题

②文化创新是社会发展的动力和源泉

③非虚构作品是人民大众喜闻乐见的

④文学创作要增强社会责任感

A.①③

B.②④

C.②③

D.①④

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