[单选题] 日常活动中,椎间盘的承载方式很复杂,通常是-我要搜题网

[单选题]有效厚度( )油层厚度。
A.A、大于
B.B、小于
C.C、等于
D.D、大于或等于

[简答题]铁路属于一级电力负荷的是（）。

[不定项选择题]共用题干 Is There a Way to Keep the Britain's Economy Growing?
1 .In today's knowledge economy,nations survive on the things they do best.Japanese design electronics while Germens export engineering techniques.The French serve the best food and Americans make computers.
2 .Britain specializes in the gift of talking.The nation doesn't manufacture much of any-thing.But it has lawyers,stylists and business consultants who earn their living from talktalk and more talk.The World Foundation think tank says the UK's four iconic job、todayare not scientists,engineers,teachers and nurses.Instead,they're hairdressers,celebrities,management consultants and managers.But can all this talking keep the British economy going?The British government thinks it can.
3 .Although the country's trade deficit was more than￡60 billion in 2006,UK's largest in thepostwar period,officials say the country has nothing to worry about.In fact,Britain does have a world-class pharmaceutical industry and it still makes a small sum from selling arms abroad.It also trades services一accountancy,insurance,banking and advertising.The government believes Britain is on the cutting edge of the knowledge economy.After all,the country of Shakespeare and Words-worth has a literary tradition of which to be proud.Rock'n'roll is an English language medium,and there are billions to be made by their cutting-edge bands.In other words,the creative economy has plenty of strength to carry the British economy.
4 .However,creative industries account for only about 4 percent of UK's exports of goods and services.The industries are finding it hard to make a profit,according to a report of the National Endowment for Science,Technology and the Arts.The report shows only 38 percent of British companies were engaged in“innovation activities”,3 percentage points be-low the EU average and well below Germany(61 percent)and Sweden(47 percent).
5 .In fact,it might be better to call Britain a“servant”economy一there are at least 4 million people“in service”.The majority of the population are employed by the rich to cook,clean,and take care of their children.Many graduates are even doing menial jobs for which they do not need a degree.Most employment growth has been, and will continue to be,at the low-skill end of the service sector一in shops,bars,hotels,domestic service and in nursing and care homes. Many graduates are employed______.
A.to find jobs
B.to do low-skill jobs
C.to feed its people
D.to handle disputes
E.to make a profit
F.to worry about the British economy

[单选题] 日常活动中,椎间盘的承载方式很复杂,通常是A.垂直压应力B.压应力、张应力和扭转应力的组合C.张应力D.扭转应力E.侧方压应力

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[单选题] 日常活动中,椎间盘的承载方式很复杂,通常是
A.垂直压应力
B.压应力、张应力和扭转应力的组合
C.张应力
D.扭转应力
E.侧方压应力