题目内容

局域网都采用星型拓扑结构。

A. 对
B. 错

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局域网工程包括设计、布线、安装、测试、调试、交付使用等各个环节。

A. 对
B. 错

连接在不同交换机上的、属于同一vlan的数据帧必须通过trunk传输。

A. 对
B. 错

If you hadn’t gone with Tom to the party last night,______.

A. you would meet John already
B. you won’t have missed John
C. you will have met John
D. you would have met John

Supposing this ship ______ , do you think there would be enough life jackets for all the passengers?

A. was sinking
B. has sunk
C. were to sink
D. sunk