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On personal computers, there are five most commonly used operating systems: DOS, Windows, Unix/Xenix, and OS/2. DOS System-In the 17 years since its inception in 1981, DOS has undergone 7 major version upgrades, from version 1.0 to version 7.0 now, continuously improving and perfecting. Windows System-Windows is the first generation of window visual interface published by Microsoft in November 1985, which makes PC enter the so-called GUI (Graphical User Interface) stage. Unix system. Unix systems were initially used on small and medium-sized computers. Unix is a multi-user system, which generally requires more than 8M of memory and a large capacity of hard disk. Linux system-Linux is the largest free software in the world at present. It is an operating system with functions comparable to UNIX and Windows and has complete network functions.Your comments will promote the birth of the next article. Come and join us, guest officer, Mua Da ~ ~ ~.　　毒枭之一李兆基谎称自己重伤身亡的消息在整个城市掀起了轩然大波，原本以为毒枭基哥死了，毒品的供应量会有所减少，没想到吸食毒品的人越来越多。这一天派出所民警张伟仁和李根尚在执勤巡逻时发现了吸毒可疑人员，通过审讯调查，抽丝剥茧，最终矛头指向已经死亡的毒枭李兆基和他的干儿子全子，面对这个毒品遍地开花的城市，警察选择迎难而上与各贩毒团伙展开了一场殊死搏斗......地矿学家李教授带学生莫天良（邢佳栋饰）和女儿月儿探寻矿源，获绘有金矿地势的羊皮图。盗匪赵无奇一路追杀，李教授中弹，临终前将图一分为二交给两个年轻人。莫天良摔下百丈悬崖，所带半张图被赵夺走。　　月儿被孟瑞救下并收容。他把月儿的半张羊皮图弄到手欲送从日本留学回来的孪生兄弟孟哲（姚橹饰），想开金矿发大财 ... 。日本军方为研发新武器派山崎（矢野浩二饰）到中国寻觅稀有金属。孟瑞新奇死去，脸上盖有一张赵无奇的面具。 接着土匪鹰老大尸体上也有赵无奇的面具。　　手下曹双林决意为鹰老大报仇。孟哲、山崎、曹双林三路人来到福禄客栈寻觅线索，一夜间发作了一场惊心动魂的打斗与拼杀……要是不把握好，说不定就要永远遗憾。　　一个出生在画栋雕梁深宅大院的康梦凡，日日夜夜站在望夫崖上，只为等待一个生在冰雪苍茫原始森林中的夏磊。所有的悲欢离合，也只为验证一句老话“山可移，海可枯，此情永不改”。