问题 问答题 简答题

简要说明软交换技术给运营商带来的优势。

答案

参考答案:

软交换技术可以给新老运营商都带来很大的优势:

软交换网络能够提供各种用户的综合接入。

软交换网络基于分组承载网,效率更高,结构更简,灵活性更好,不但降低了运营成本,网络升级和扩展也更为容易。

软交换网络具有强大的业务提供能力。

软交换网络采用开放的网络结构,构件间采用标准的接口,运营商可根据需要自由组合各部分的功能产品来组建网络,实现各种异构网的互通。

软交换网络体系使得原来分立的各种网络有机地统一在一起,实现了公共资源共享;而且,软交换网络中的设备普遍处理能力高、容量大,从而可以减少局所,使得网络层次和结构得以简化,节约了网络建设和运维成本。

阅读理解

The Eiffel Tower was built in 1889, in memory of the 100th birthday of the French Revolution. The Prince of Wales, later King Edward VII of England, opened the tower. Of the 700 suggestions that were handed in, Gustave Eiffel’s was chosen.

However, at first, it was not well accepted by all and a group of people — including many well-known writers and painters at that time — were fiercely against its design.

Being about 300 meters in height, and 7,000 tons in weight, it was the world’s tallest building until 1930. It was a great project for France. 300 workers took two years to build it. It isn’t an ordinary building, since it is almost made of steel. For example, its body moves around at most 12 cm in heavy wind. Moreover, its height changes up to 15 cm according to the temperature.

It was almost destroyed in 1909, but was saved because of its antenna(天线), which is used for communication at that time. Beginning in 1910 it became part of the International Time Service. French radio and French television have also made good use of its height.

The Eiffel Tower has also seen a few strange things. In 1923, a journalist rode a bicycle down from the first level of it. And in 1954, a mountain climber climbed on top of it and tried to measure its exact height.

Anyway, although its birth was difficult, it is now well accepted all over the world. It has been considered as one of the symbols of Paris.

44. The passage mainly tells us ________.  

A. the history of the Eiffel Tower

B. some information about its design

C. what the Eiffel Tower was used for

D. how it became one of the symbols of Paris

45. Which of the following statements is TRUE according to this passage?

A. Many people couldn’t accept the Eiffel Tower at the beginning.

B. It was the world’s tallest building for hundreds of years.

C.A journalist rode down from the Eiffel Tower in 1954.

D.The Eiffel Tower was saved because of its height.

46. The French Revolution took place in _______.

A. 1889    B. 1923     C. 1789     D. 1930

单项选择题 A1/A2型题