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一个一事无成的农民，在国家存亡的关键时刻挺身而出，他要以一己之力保卫家国。不过晕乎乎的他能成么？/pointWe 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.17. Chain of Responsibility)没有办法，为了自己的王位和将来，只好苦苦支撑着。17不等旁人说话，王穷首先反对。