问题
单项选择题
路由器工作在OSI模型的
A．网络层
B．传输层
C．数据链路层
D．物理层
答案
参考答案：A
解析：【解析】路由器工作在OSI模型的网络层。
搜题请搜索小程序“爱下问搜题”
路由器工作在OSI模型的
A．网络层
B．传输层
C．数据链路层
D．物理层
参考答案：A
解析：【解析】路由器工作在OSI模型的网络层。
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| Every morning at eleven, a bright new car drove through the central park in New York. Inside the car 1 a driver and his boss, a well-known millionaire (百万富翁). Each morning the millionaire 2 a poorly-dressed man 3 on a park bench. The man always sat 4 staring at the hotel in which the rich man lived. One day the millionaire was so 5 in the man that he asked his driver to stop the car and he 6 to the bench. He said to the poor man, "Excuse me, 7 I just have to know why you sit staring at my hotel every morning." "Sir," said the poor man, "I'm a failure. I have no job, no family and no 8 . I sleep on this bench and every night I dream that 9 day I will sleep in this hotel." The rich man had 10 . He said to the poor man "Tonight your dream will come 11 . I'll 12 for the best room in that hotel for you for 13 ." The millionaire smiled and felt 14 of himself. A few days 15 , the millionaire went by the poor man's room to ask him how he 16 himself. To his great 17 , he found that the poor man had moved out of the hotel, back to his park bench. When the millionaire asked why, the man said, "You see, when I'm 18 here sleeping on the bench. I always dream I'm up there in the hotel. It's a wonderful dream. But when I was up there in the hotel, I dreamed I was 19 here on this cold bench. It was 20 dream and I could not get any sleep at all." | ||||
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