题目内容

The main advantage of wind powered stations is that______.

A. it does not have polluting effects
B. it is available at any time
C. it can satisfy the state's energy needs
D. it can beautify the environment

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The main disadvantage of wind power is that it______.

A. is competitive
B. produces more pollutants
C. is low in efficiency
D. is ugly

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A person who believes in his incompetence will ______.

A. make no real efforts
B. fail to go at a job
C. show a complete lack of confidence
D. all of the above

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以太网中如果发生介质访问冲突，按照二进制指数后退算法决定下一次重发的时间，使用二进制指数后退算法的理由是（）。

A. 这种算法简单
B. 这种算法执行速度快
C. 这种算法考虑了网络负载对冲突的影响
D. 这种算法与网络的规模大小无关

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如果路由器配置了BGP协议，要把网络地址133.1.2.0/24发布给邻居，那么发布这个公告的命令是（）。

A. R1 (config-router) #network 133.1.2.0
B. R1 (config-router) #network 133.1.2.0 0.0.0.255
C. R1 (config-router) #network-advertise 133.1.2.0
D. R1 (config-router) #network 133.1.2.0 mask 255.255.255.0

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The main advantage of wind powered stations is that______.

A. it does not have polluting effects B. it is available at any time C. it can satisfy the state's energy needs D. it can beautify the environment

The main disadvantage of wind power is that it______.

A person who believes in his incompetence will ______.

以太网中如果发生介质访问冲突，按照二进制指数后退算法决定下一次重发的时间，使用二进制指数后退算法的理由是（）。

如果路由器配置了BGP协议，要把网络地址133.1.2.0/24发布给邻居，那么发布这个公告的命令是（）。

A. it does not have polluting effects
B. it is available at any time
C. it can satisfy the state's energy needs
D. it can beautify the environment