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问题 单项选择题

腰穿进行脑脊液检查的禁忌证是（）

A．颈强直

B．克匿格征阳性

C．布鲁津斯基征阳性

D．双侧瞳孔不等大伴有视 * * 水肿

E．昏迷

答案

参考答案：D

解析：

双侧瞳孔不等大伴有视 * * 水肿示颅内压升高，属于腰穿禁忌证。

多项选择题

影响安定系数的因素主要是下面的哪几项（）。

A、装炉煤水分

B、不按计划推焦，检修时间过长

C、集气管压力低，炭化室负压、炉门不严密，影响煤气的热值，进而影响炉温

D、受大气温度影响，煤气流量产生变化
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单项选择题

Like all the huge metropolises of the world, there are lots of diversions both outdoors and indoors in Chicago. The Art Institute of Chicago has one of the world’s (1) art collections, including more French Impressionist paintings than even in the Paris Louvre itself. The Field Museum of Natural History and the Museum of Science and Industry are also great historical and cultural treasure houses to (2) as well as entertain children and adults (3) In the Field Museum one comes (4) a surprisingly big collection of Chinese exhibits from the ancient (5) to the early century. The Sears Tower and the Buckingham Fountain are the pride of the Chicagoans; (6) having 110 storeys is said to be the highest tower in the world and the (7) is the largest fountain in the United States. Lake Michigan is for yachting in summer time, (8) the highlights of Chicago life all the year round are concerts, operas and plays (9) by the city’s orchestra, opera houses and theatres. In summer, especially around the Independence Day, July 4th, many festivals and fairs are given outdoors, which, (10) crowds and crowds of people, with their parades, fireworks, (11) concerts, water-skiing and good foods.

But with all its attractions and beautiful spots Chicago is also a city (12) for crimes. All the dwelling houses are (13) with three doors and visitors have to speak through microphone (14) in the wall to the residents before they can get admitted. In the streets there are white-color telephones. When one finds oneself (15) , he needs only to knock the receiver (16) the hook and the next instant the police will (17) . If one does not drive a car, it may well be dangerous for him or her to go out alone in the evening. At first I did not take this warning seriously. (18) , my two encounters with the Black people (19) dusk in the neighborhood were so unpleasant and frightening that I have (20) shut myself evenings in my room, in almost all studying, imposing a curfew on myself.

18（）

A.Therefore

B.Moreover

C.However

D.Whatever
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