从理论上讲,任何旅游资源的吸引力会发生衰退,其原因可能为()。 A.资源本身可能由于

题型:多项选择题

问题:

从理论上讲,任何旅游资源的吸引力会发生衰退,其原因可能为()。

A.资源本身可能由于长期接待过量游客而造成了对资源的破坏与污染

B.管理不善导致服务质量下降

C.国家出台的不利政策

D.游客的需求可能因社会时尚的变化而使兴趣发生转移

E.不可抗拒力的影响

考点:中级旅游经济第二章旅游供给与设施建设第二章旅游供给与设施建设题库
题型:多项选择题

下列变化中,属于化学变化的是

A.冰块融化

B.大米酿酒

C.黄瓜榨汁

D.玻璃破碎

题型:多项选择题

如图所示,一个U形导体框架,其宽度L=1m,框架所在平面与水平面的夹用α=30°。其电阻可忽略不计。设匀强磁场与U形框架的平面垂直。匀强磁场的磁感强度B=0.2T。今有一条形导体ab,其质量为m=0.5kg,有效电阻R=0.1Ω,跨接在U形框架上,并且能无摩擦地滑动,求:

(1)由静止释放导体,导体ab下滑的最大速度vm

(2)在最大速度vm时,在ab上释放的电功率。(g=10m/s2)。

题型:多项选择题

阅读理解。

     Northern Europeans spend a lot of time in their cold and cloudy winters planning their summer holidays.

They are proud of their healthy color when they return home after the holiday. But they also know that a

certain amount of sunshine is good for their bodies and general health.

     In ancient Greece people knew about the curing powers of the sun, but this knowledge was lost. At the

end of the nineteenth century a Danish doctor, Niels Finsen, began to study the effect of sunlight on certain

diseases, especially diseases of the skin. He was interested not only in natural sunlight but also in man-made

produced rays. Sunlight began to play a more important part in curing sick people.

     A Swiss doctor, Auguste Rollier, made full use of the sun in his hospital at Leysin. Leysin is a small village

high up in the Alps. The position is important, the rays of the sun with the greatest healing power are the

infra-red (红外线的) and ultraviolet (紫外线的) rays; but ultra-violet rays are too easily lost in fog and the

polluted air near industrial towns. Dr. Rollier found that sunlight, fresh air and good food cure a great many

diseases. He was particularly successful in curing certain forms of tuberculosis(结核病) with his"sun-cure".

     There were a large number of children in Dr. Rollier's hospital. He decided to start a school where sick

children could be cured and at the same time continue to learn. It was not long before his school was full.

     In winter, wearing only shorts, socks and boots, the children put on their skis after breakfast and left the

hospital. They carried small desks and chairs as well as their school books. Their teacher led them over the

snow until they reached a slope (斜坡)which faced the sun and was free from cold winds. There they set out

their desks and chairs, and school began.

     Although they wore hardly any clothes, Rollier's pupils were very seldom cold. That was because their

bodies were full of energy which they got from the sun. But the doctor knew that sunshine can also be

dangerous. If, for example, tuberculosis is attacking the lungs, unwise sunbathing may do great harm.

     Today there is not just one school in the sun. There are several in Switzerland, and since Switzerland is

not the only country which has the right conditions, there are similar schools in other places.

1. According to the passage, when did people began to realize sunlight played a more important part in

    the treatment of disease?

A. From ancient times.

B. At the end of the nineteenth century.

C. Not until this century.

D. Only very recently.

2. Why are a Danish doctor and a Swiss doctor mentioned in the second and third paragraphs? 

A. Because they both made use of sunlight to treat illness.

B. Because they were the first people who used sunlight for treatment.

C. Because they were both famous European doctors.

D. Because they used sunlight in very different ways.

3. Dr Rollier set up a "sun-cure" school probably for the reason that _____.

A. most children could stay in his hospital

B. children could study while being treated

C. the school was expected to be full of pupils

D. the school was high up in the mountains

4. What can be inferred from the last paragraph of the passage?

A. "Sun-cure" schools are becoming popular everywhere.

B. Switzerland is the only country where "sun-cure" schools are popular.

C. Proper Conditions are necessary for the running of a"sun-cure" school.

D. "Sun-cure" schools are found in countries

题型:多项选择题

系统进入“初始化”状态后,必须通过()操作才能使用系统进入“正常处理”状态,以进行其它的业务操作。

A、开始初始化

B、结束初始化

C、发票读入

D、发票填开

题型:多项选择题

女性,35岁。患类风湿关节炎,长期服用强的松。10小时前突发腹痛,呕吐3次。中上腹部压痛,血淀粉酶1000单位(苏氏法)。

此时最具诊断价值的辅助检查是哪一项()。

A.淀粉酶

B.血脂肪酶

C.腹部CT

D.血清胆红素

E.血糖

男性,62岁。突发上腹痛伴恶心、呕吐10小时急诊。查血WBC17×109/L,AST256U/L,血淀粉酶1080U,Pa0270mmHg,BE7.6。卧位腹平片:肠管明显积气扩张。

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