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【说明】 无线网络利用无线电波作为数据的传导，而就应用层面来讲，它与有线网络的用途完全相似，两者最大的不同之处是传输数据的媒介不同。除此之外，正因它是无线，因此不论是在硬件架设或使用的机动性方面均比有线网络要有优势。而无线局域网是利用无线技术实现快速接入以太网的技术。 【问题2】 若要架构一个无线网络，需要哪些最基本的配备
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在创建公式时，“公式编辑器”会根据数学排版惯例自动调整字号、间距和格式。
Passage 1 Long bus rides are like television shows. They have a beginning, a middle, and an end--with commercials thrown in every three or four minutes. The commercials are unavoidable. They happen whether you want them or not. Every couple of minutes a billboard glides by outside the bus window. "Buy Super Clean Toothpaste. "" Drink Root Beer." "Fill up with Pacific Gas." Only if you sleep, which is equal to turning the television set off, are you spared the unending cry of "You Need It! Buy It Now !" The beginning of the ride is comfortable and somewhat exciting, even if you’ ve traveled that way before. Usually some things have changed--new houses, new buildings, sometimes even a new road. (76) The bus driver has a style of driving and it’ s fun to try to figure it out the first hour or so. If the driver is particularly reckless or daring, the ride can be as thrilling as a suspense story. Will the driver pass the truck in time Will the driver move into the right or the left-hand lane Alter a while, of course, the excitement dies down. Sleeping for a while helps pass the middle hours of the ride. Food always makes bus rides more interesting. But you’ ve got to be careful of what kind of food you eat. Too much salty food can make you very thirsty between stops. The end of the ride is somewhat like the beginning. You know it will soon be over and there’ s a kind of expectation and excitement in that. The seat, of course, has become harder as the hours have passed. (77)By now you’ ve sat with your legs crossed, with your hands in your lap, with your hands on the armrests—even with your hands crossed behind your head. The end comes just at the right time. There are just no more ways to sit. The writer thinks that the end of the ride is somewhat like the beginning because both are（）
在“语言栏设置”中，取消选中“在桌面上显示语言栏”复选框则可激活其他各选项。
【说明】 利用Windows Server 2008架设邮件服务器，回答相应问题。 【问题4】 默认情况下，POP3和SMTP服务所使用的端口分别是什么
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