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We know that computers can be used for work, study, entertainment, etc. In addition to the necessary computer hardware, software is also needed. Usually, we call a computer with only hardware but no software "bare metal", which cannot do any meaningful work. At present, software can be divided into two categories according to its use: system software and application software. System software is a program designed for computer systems to efficiently use and manage computer software and hardware resources and support the operation of application software. Such as operating systems, programming languages and language processing programs, network system software, system service programs, etc. Among them, Windows operating system is what we often use. Application software is a variety of programs that are user-oriented and written to solve practical problems. It can be written by users themselves or purchased. For example, office XP, Photoshop, Red Alert and so on, which we often use.别人在组团刷副本，你在噼里啪啦地敲着键盘。二来年纪大了也避嫌，人家也不好说啥。6. Standardize service, technology, promotion and operational guidelines to make all operations simple and fast and reduce labor costs.　所谓“爱国者日”是指每年4月19日——美国的部分州为纪念独立战争而设立的纪念日，波士顿马拉松比赛就是为庆祝这个节日而举办的。 　　2013年4月15日下午，在美国马萨诸塞州波士顿科普里广场的117届波士顿马拉松终点附近，突然发生爆炸，造成3人死亡，上百人受伤。这三名遇难者分别是23岁来自中国辽宁沈阳的波士顿大学研究生吕令子、8岁本地男孩马丁·理查德（Martin Richard）和29岁餐厅经理克里斯尔·坎贝尔（Krystle Campbell）。 　　随后警方根据目击者描述和监控录像，迅速锁定该恐怖袭击的嫌犯为26岁的塔米尔南·沙尼耶夫（Tamerlan Tsarnaev）和19岁的乔卡·沙尼耶夫（Dzhokhar A. Tsarnaev）兄弟，他俩于十年前从车臣来到美国定居。在追捕过程中哥哥塔米尔南·沙尼耶夫被警方击中后不治身亡，弟弟乔卡·沙尼耶夫则在同一天（4月19日）在一所一民宅后停放的小船里被警方抓获。 　　《爱国者日》计划今年秋季在波士顿开机，J·K·西蒙斯和马克·沃尔伯格将饰演两名参与追捕的波士顿警察。但肯定不能不罚，因此，冯五是一定不能留了。