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问题 单项选择题

某地一厂房冬季室内设计参数为tn=18℃、φn=50%，采暖室外计算温度tw=-12℃，室内空气干燥。厂房的外门的最小热阻不应低于下列哪一项

A．0.21m2·℃/W
B．0.26m2·℃/W
C．0.31m2·℃/W
D．0.35m2·℃/W

答案

参考答案：A

单项选择题

下列不属于厥证特点的是（）

A.急骤性

B.突发性

C.一时性

D.移时苏醒

E.一厥不醒
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问答题

In future, as newspaper fade and change, will politicians therefore burgle their opponents’ offices without punishment Journalism schools and think-tanks, especially in America, are worried about the effect of a collapsing journalism.
Nobody should enjoy the disappearance of once-great newspapers. But the decline of newspapers will not be as harmful to society as some fear. 46. Denmocracy, remember, has already survived the huge television-led decline in circulation since the 1950s. It has survived as readers have evaded papers and papers have evaded what was in conservative times thought of as serious news. And it will surely survive the decline to come.
47. A few papers that invest in investigative stories which often benefit society the inost are in a good position to survive, as long as their owners do a comnpetent job of adjusting to changing circumstances. Publications like the New York Times and the Wall Street Journal should be able to put up the price of their journalism to compensate for advertising revenues lost to the internet—especially as they cater to a more global readership. 48. As with many industries, it is those in the middle—neither highbrow, nor entertainingly populist—that are likeliest to fall by the wayside.
49. The usefulness of the press goes much wider than investigating abuses or even spreading general news; it lies in holding governments to account--trying them in the court of public opinion. The internet has expanded this court. Anyone looking for information has never been better equipped. People no longer have to trust a handful of national papers or, worse, their local city paper. News-aggre-gation sites such as Google News draw together sources from around the world. The website of Britain’s Guardian now has nearly half as many readers in America as it does at home.
50. Furthermore, a new force of "citizen" journalists is itc.hing to hold politicians to account. The web has opened the closed world of professional editors and reporters to anyone with a keyboard and an internet connection. Several companies have been chastened by amateur postings—of flames erupting from Dell’s laptops or of cable TV repairmen asleep on the sofa. Each blogger is capable of bias and slander, but, taken as a group, bloggers offer the searcher after truth boundless material to chew over. Of course, the internet panders to closed minds; but so has much of the press.
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