下列关于广域网技术的叙述中,错误的是()。A.研究的重点是核心交换技术 B.采用广播

题型:单项选择题

问题:

下列关于广域网技术的叙述中,错误的是()。

A.研究的重点是核心交换技术

B.采用广播泛洪的传输方式

C.典型技术包括PSTN、ISDN、DDN、X.25、FR网、ATM网和光以太网等

D.其发展的一个重要趋势是IP over SONET/SDH

考点:计算机等级考试网络工程师计算机网络工程师
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What ______she have ______dinner?           [ ]

A. do, in                  

B. does, for                

C. is, at  

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男性,35岁,高热,皮肤骚痒半月,右颈及锁骨上淋巴结肿大,无压痛,互相粘连,血红蛋白90g/L,白细胞10×109/L,中性66%,淋巴24%,骨髓涂片找到里-斯细胞。

常用的化疗方案是()。

A.MOPP

B.VDP

C.羟基脲

D.瘤可宁

E.HA/DA

题型:单项选择题

阅读理解。

      Switzerland (瑞士) is famous for its watches. However, this country didn't invent the watch. It was the

British who did it. Here is a story of how the watch was brought to Switzerland.

      Many years ago, an Englishman was travelling to Italy. On his way he stopped in a small town in South

Switzerland. This Englishman travelled in a carriage (马车) inside which there was a carriage watch. This

was the earliest kind of watch. A native shop assistant (售货员) happened to see the watch. He wondered

what it was and asked the Englishman about it. "It is a carriage watch." said the man. This machine tells the

time but now it isn't working.

      At once the shop assistant offered to try to repair it. So the traveller handed him the watch. The assistant

was a very wise man. So it was not surprising that he managed to repair it. He even remembered how it was

made. As soon as the traveller had gone on his way, he made a watch exactly the same type.

      Thus the watch-making was started in Switzerland. Today Swiss watches are sold in stores all over the

world.

1. Switzerland is famous for ______. [ ]

A. making watches

B. selling watches

C. inventing watches

D. the carriage watch

2. It was ______ who brought a watch to Switzerland earliest. [ ]

A. a Swiss

B. an Italian

C. an Englishman

D. a shop assistant

3. The earlist watches were made in ______. [ ]

A. Switzerland

B. England

C. Italy

D. a small town

4. The first Swiss watch was made by ______. [ ]

A. an Italian shop assistant

B. an English shop assistant

C. a man who came from Switzerland

D. a man who was travelling to Italy

5. The carriage watch was a machine which ______. [ ]

A. was put in the carriage

B. wasn't working

C. told people time

D. had to be repaired

题型:单项选择题

有关氯胺酮的特征,下列哪各说法不正确()

A.止痛性能极强

B.麻醉作用快速、短效

C.具有类似致痛作用

D.能降低脑氧耗量,对脑缺氧有保护意义

E.可使心率增速、血压升高及心排出量上升

题型:单项选择题

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