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问题 单项选择题

PCI-E每个通路是全双工的，并且其1.0规范支持通路中每个方向的发送/接收速率为2.5Gbps。由于传送时1个字节需编码成10位，因此一个PCI-E×8链路的总带宽(发送+接收)为

A．2.5GBps

B．5GBps

C．4GBps

D．8GBps

答案

参考答案：B

阅读理解

根据短文，判断正(√)误(×)。

        Many years ago,there was an old man in New York. He didn't like children at all. But he  liked cats

very much. He had black cats and white cats. He had mother cats and baby cats. So children often came

to his house. They came to play with cats. More and more cats came to the old man's house. The old man couldn't give the cats much food. So he gave each child a cat. The children were very happy. The old man was very happy, too.

( ) 1. The old man came from America.

(     ) 2. The old man liked children very much.

(     ) 3. The old man had many cats.

( ) 4. The old man didn't have much food for the cats.

( ) 5. Each child had got a cat at last.
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判断题

服务需求如果呈上升趋势波动，就会促使服务质量不断提升。
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