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When setting up a network, the selected network cable must have flame resistance to reduce the probability of fire. Generally, the rubber outside the real network cable is flame-resistant, which is a national mandatory standard. However, fake network cables are often made of common flammable materials. When we buy network cables at ordinary times, we can also use this feature to identify the authenticity of network cables.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.不少网友如此感叹道。上个世纪二三十年代，上海滩出现了无线电台，一时间，上海居民耳目一新，一些私人电台蜂拥而起，不仅播放文娱节目，还负责传递商业业务。阮清恬在学校里学过无线电知识，她因为帮助任浩铭建立电台，从而和任浩铭相识了。任浩铭由于一个误会，迁怒于阮清恬，他将阮清恬最重要的传家宝流苏耳环拿走了。阮清恬必须要拿回耳环。在这过程中，阮清恬凭借她的善良和聪慧，赢得了任浩铭的好感与尊重。最终，阮清恬和任浩铭因为爱情而接受彼此，那对象征着幸福如意的流苏耳环，被任浩铭戴在了阮清恬的耳朵上，他希望幸福和如意永远伴随着这个善良的女人。这一对有情人终成眷属。朱利奥（皮耶弗朗西斯柯法维诺饰）、洁玛（米卡叶拉拉玛佐蒂饰）、保罗（吉姆罗斯斯图尔特饰）和里卡多（克劳迪奥桑塔马利亚饰）四个人在80年代的意大利相遇，并成为彼此生命中不可或缺的亲密的挚友。本片叙述四人长达40年的生命故事，在他们交织的情感里，四位好友如何面对人生里的爱情、志向，以及生活中成功和失败…　　5. The Brill Building In 4 Songs