问题
单项选择题
网桥所处理的对象是 (50) 。
A．模拟信号
B．IP数据包
C．数据段
D．MAC帧
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
网桥所处理的对象是 (50) 。
A．模拟信号
B．IP数据包
C．数据段
D．MAC帧
参考答案：D
阅读短文，然后选择能使短文意义完整的正确选项。 Mr. Brown is 75 years old. He lives with his daughter’s family. Every morning he goes to in the park. And at twelve thirty he home for lunch. But today a car stops at his house at twelve. Two policemen(警察) help him get out. One of says to Mr. Brown’s daughter, “The old man can’t find his in the park. He calls us to take him to in our car.” The daughter the policemen and the policemen leaves(离去). Then she asks her , “You go to that park to walk every day and you lose your way. But today, you can’t find the way. What’s wrong with you?” “I can find my way. I just don’t to walk home today,” the old man says and smiles (笑) like a child.
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