题目内容

以太网采用较为灵活的无连接的工作方式,以太网发送的数据都使用曼彻斯特编码的信号。

A. 对
B. 错

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宽带城域网主要技术是基于数据传输速率为100Mb/的。

A. 对
B. 错

如果数据链路层能够为两个网络层的对等实体提供数据传输服务,那么对于两个网络层需要通信的对等实体来说就存在着一个虚拟数据路径。

A. 对
B. 错

Which of the following features best describes Kennedy's Inaugural Address?

A. Informative
B. Persuasive
C. Inclusive
D. Argumentative

What does Kennedy mean by saying that "the world is different now" according to Paragraph 2?

A. Man is more able to build or destroy the world.
B. Countries in the world are more politically split.
C. The world situation is more intricate and turbulent.
D. The world is more advanced in science and technology.

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