It can be inferred that Los Remos______.
A. is a country in America
B. is a town near Chernobyl
C. is a place in Mexico
D. is a city in California
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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. is competitive
B. produces more pollutants
C. is low in efficiency
D. is ugly
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
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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