男,17岁,头痛半年,头颅CT平扫如图所示,最可能的诊断是() A.垂体瘤 B.颅咽

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问题:

男,17岁,头痛半年,头颅CT平扫如图所示,最可能的诊断是()

A.垂体瘤

B.颅咽管瘤

C.海绵状血管瘤

D.脊索瘤

E.蛛网膜囊肿

考点:放射医学(医学高级)放射医学3
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因工程需要等特殊原因而划定的一次性专用海洋倾倒区是()。

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学生在寒暑假期间乘坐硬座车时,客票、加快票、空调票均按半价核收,乘坐硬卧车时,卧铺票按全价核收。(部竞赛题《客规》)

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电容器的选型应符合( )的规定。

A.低压电容器宜采用自愈式电容器

B.设置在严寒、高海拔、湿热带等地区和污秽、易燃易爆等环境中的电容器,均应满足特殊要求

C.装没于屋内的电容器,宜选用难燃介质的电容器

D.可选用单台电容器、集合式电容器和单台容量在500kvar及以上的电容器组成电容器组

E.装设在同一绝缘框(台)架上串联段数为二段的电容器组,宜选用单套管电容器

题型:单项选择题

Questions 21~25


Next month a large group of British business people are going to America on a venture which may generate export earnings for their companies’ shareholders in years to come. A long list of sponsors will support the initiative, which will involve a £3-million media campaign and a fortnight of events and exhibitions. The ultimate goal is to persuade more Americans that British companies have something to interest them.
While there have been plenty of trade initiatives in the past, the difference this time round is that considerable thinking and planning have gone into trying to work out just what it is that Americans look for in British products. Instead of exclusively promoting the major corporations, this time there is more emphasis on supporting the smaller, more unusual, niche businesses.
Fresh in the memories of all those concerned is the knowledge that America has been the end of many a large and apparently successful business. For Carringtons, a retail group much respected by European customers and investors, America turned out to be a commercial disaster and the belief that they could even show some of the great American stores a retailing trick or two was hopelessly over-optimistic.
Polly Brown, another very British brand that rode high for years on good profits and huge city confidence, also found that conquering America, in commercial and retailing terms, was not as easy as it had imagined. When it positioned itself in the US as a niche, luxury brand, selling shirts that were priced at $40 in the UK for $125 in the States, the strategy seemed to work. But once its management decided it should take on the middle market, this success rapidly drained away. It was a disastrous mistake and the high cost of the failed American expansion plans played a large role in its declining fortunes in the mid-nineties.
Sarah Scott, managing director of Smythson, the upmarket stationer, has had to think long and hard about what it takes to succeed in America and she takes it very seriously indeed. "Many British firms are quite patronizing about the US," she says. "They think that we’re so much more sophisticated than the Americans. They obviously haven’t noticed Ralph Lauren, an American who has been much more skilled at tapping into an idealized Englishness that any English company. Also, many companies don’t bother to study the market properly and think that because something’s successful in the UK, it’s bound to be successful over there. You have to look at what you can bring them that they haven’t already got. On the whole, American companies are brilliant at the mass, middle market and people who’ve tried to take them on at this level have found it very difficult. "
This time round it is just possible that changing tastes are running in Britain’s favour. The enthusiasm for massive, centralized retail chains has decreased. People want things with some fort of individuality; they are fed up with the banal, middle-of-the-road taste that America does so well. They are now looking for the small, the precious, the ’real thing’, and this is precisely what many of the companies participating in the initiative do best.

According to the writer, Polly Brown’s mistake occurred when it ______.

A. continued to trade despite making a loss
B. attempted to attract a different type of customer
C. tried to break into too many markets at the same time
D. expected American consumers to pay British prices

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道口栏杆以对道路开放为()。

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