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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.Yes. So in this situation? , need to choose sunny weather? Add, use air conditioner natural wind to blow it dry. Air conditioning can also be used? Hot air to dry, which can remove peculiar smell? Source, valid? Alleviate the peculiar smell in the car. 6. Wash the car frequently and clean the car. ? Must there be rules? Appropriate? Clean, go to the car wash shop or clean yourself if conditions permit, except? Surface dust? Cleaning, for removing peculiar smell, pay special attention to the car? Some guard corners? Clean up. Special? Sometimes the heart? Something spilled on? In the car? It must be cleaned up in time. 7. Car beauty shops do deodorization. Beauty shop? Like to make a whole car? Deodorization and cleaning, this effect is also wrong? If you are satisfied, please adopt it.Action: I took it over and tried my hand. Then I opened it and said, "Grandpa, you are really warm-hearted, but I don't know you. How do you know that I am the person on the express, and where my home is... By the way, what does the person who asked you for help think? I forgot earlier, this excuse is too low."这部末日后题材惊悚片以巴西为背景，讲述了在不远的未来，人们需要经过残酷激烈的竞争，才能有极少数人进入社会中的特权阶层。The request is passed on, and from the aspect of performance, the long chain of responsibilities is avoided to improve the performance.怎么？亚父要紧吗？项羽心中顿时生出一种不好的预感，大夫吞吞吐吐的表情更加印证了猜想，于是停住脚步追问。白凡叹道：他在这个秋霜的帮忙下，晚上偷偷地去了城中一条河边，顺河游出城去了。