纯液体的饱和蒸汽压取决于所处的（）。A、压力； B、温度； C、压力和温度； D、海

男性，66岁，反复咳嗽、咳痰30年，加重伴呼吸困难3天入院。查体：T38.7℃，BP150/90mmHg，口唇发绀，双下肺闻及大量干湿啰音，P₂>A₂，三尖瓣区可闻及收缩期杂音。急查血糖7.8mmol/L。

该患者最可能的诊断是（）

A.肺栓塞

B.风湿性心脏病

C.高血压心脏病

D.肺源性心脏病

E.冠状动脉硬化性心脏病

08-32捣固车电子摆的型号为（）。

A、EL-T1330

B、EL-T609

C、EL-T2036

D、EL-T2044

His long service with the education was         with a thirty-year teaching qualification.

A．admitted

B．attributed

C．advocated

D．acknowledged

FOR the past two years in Silicon Valley, the centre of America’s technology industry, conference-goers have entertained themselves playing a guessing game: how many times will a speaker mention the phrase "long tail" It is usually a high number, thanks to the influence of the long tail theory, which was first developed by Chris Anderson, the editor of Wired magazine, in an article in 2004. Though technologists and bloggers chuckle at how every business presentation now has to have its long-tail section, most are envious of Mr Anderson, whose brainwave quickly became the most fashionable business idea around.

Whether a blockbuster film, a bestselling novel, or a chart-topping rap song, popular culture idolizes the hit. Companies devote themselves to creating them because the cost of distribution and the limits of shelf space in physical shops mean that profitability depends on a high volume of sales. But around the beginning of this century a group of internet companies realized that with endless shelves and a national or even international audience online they could offer a huge range of products—and make money at the same time.

The niche, the obscure and the specialist, Mr Anderson argues, will gain ground at the expense of the hit. As evidence, he points to a drop in the number of companies that traditionally calculate their revenue/sales ratio according to the 80/20 rule—where the top fifth of products contribute four-fifths of revenues. Ecast, a San Francisco digital jukebox company, found that 98% of its 10,000 albums sold at least one track every three months. Expressed in the language of statistics, the experiences of Ecast and other companies such as Amazon, an online bookseller, suggest that products down in the long tail of a statistical distribution, added together, can be highly profitable. The internet helps people find their way to relatively obscure material with recommendations and reviews by other people and (for those willing to have their artistic tastes predicted by a piece of software) computer programs which analyze past selections.

Long-tail enthusiasts argue that the whole of culture will benefit, not just commercial enterprises. Television, film and music are such bewitching media in their own right that many people are quite happy to watch and listen to what the mainstream provides. But if individuals have the opportunity to pick better, more ideally suited entertainment from a far wider selection, they will take it, according to the theory of the long tail. Some analysts reckon that entire populations might become happier and wiser once they have access to thousands of documentaries, independent films and sub-genres of every kind of music, instead of being subjected to what Mr Anderson calls the tyranny of lowest-common-denominator fare. That might be taking things a bit far. But the long tail is certainly one of the internet’s better gifts to humanity.

The 80/20 rule is used to（）

A. prove the long tail theory

B. figure out financial ratio

C. select profitable products

D. design procedures

在溴化锂吸收式机组运转过程中，应记录好制冷机的各种参数及运转中出现的不正常情况及排除过程，一般为每小时或每2h记录1次。