问题 单项选择题

微机局域网中为网络提供资源并对这些资源进行管理的计算机是( )。

A.网络服务器

B.网络工作站

C.网络通讯设备

D.网络用户终端

答案

参考答案:A

解析: 在非对等结构的局域网中,联网计算机都有明确的分工。网络服务器采用高配置与高性能的计算机,以集中方式管理局域网的共享资源,并为网络工作站提供各类服务。网络工作站一般是配置比较低的微型机系统,主要为本地用户访问本地资源与访问网络资源提供服务。因为网络服务器集中管理网络资源与服务、所以网络服务器是局域网的逻辑中心。

单项选择题
阅读理解

阅读理解。

     Most shops in Britain open at 9:00am, and close at 5:00 or 5:30 in the evening. Small shops usually

close for an hour at lunchtime. On one or two days a week-usually Thursday and/or Friday-some large

food shops stay open until about 8:00 pm for late night shopping.

     Many shops are closed in the afternoon on one day a week. The day is usually Wednesday or

Thursday and it is a different day in different towns.

     Nearly all shops are closed on Sundays. Newspaper shops are open in the morning, and sell sweets

and cigarettes as well. But not all the things can be sold on Sundays.

     Usually it is not difficult for foreign visitors to find where to buy things. Most shops sell the things that

you want to buy. One problem is stamps. In Britain you can only buy these at post offices. Many large

food shops are self-service. When you go into one of these shops, you take a basket and you put the

things you wish to buy into this. You pay for everything just before you leave. If anyone tries to take things from a shop without paying, they are almost certain to be caught, because most shops have detectives.

     When you are waiting to be served in a shop, it is important not try to be served before people who

arrive before you. Many foreign people are surprised at the British way of queuing (排队).

1. Most shops in Britain stay open for about ______ a day.

A. eight hours    

B. five hours    

C. ten hours    

D. six hours

2. According to the passage, which of the following statements is NOT true?

A. Some large food shops open for about 11 hours on Thursday or Friday.

B. Many shops are closed in the afternoon once a week on Tuesday.

C. Only a few things can be bought on Sundays.

D. It is not difficult for foreign visitors to buy things in Britain.

3. You can not buy ______ in shops.

A. cigarette    

B. sweets    

C. stamps    

D. clothes

4. Which of the following statements is TRUE?

A. Most shops usually close for an hour at lunchtime.

B. Many large shops are self-service.

C. Most shops have detectives.

D. People do not have to queue to be served.

5. Which of the following statements can be the best title of this passage?

A. Shops in Britain

B. How to buy things in Britain?

C. The British Way of Queuing

D. How long are the British shops?