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Subway station is the center of the whole subway network. It not only undertakes the functions of personnel gathering and evacuation, but also undertakes the functions of various professional equipment and the operation of the whole system. The design of subway station is very important. The design of a station includes many specialties. In the traditional design, ISCS, BUS, FAS, PA, PIS and other professional engineers are difficult to achieve unity. BIM technology provides a collaborative design platform, which can promote effective communication among various specialties and integrate all resources. The application of BIM makes design communication more convenient, easy to adjust and improve, thus optimizing the design.再见，谢谢你送我。不等板栗和小葱回答，玉米就气道：不喊你们了。该剧讲述了为帮被控涉嫌贩运毒品的缪兰洗刷冤情，年青有为的律师韩绪与多位魅惑十足的红罂粟女郎，陷入了一场生与死、正与邪的较量。According to statistics, SYN attack is the most common and easily used attack method among all hacker attacks. I believe many people still remember the attack on YAHOO website in 2000. At that time, hackers used simple and effective SYN attacks. Some network worms cooperated with SYN attacks to cause greater damage. This paper introduces the basic principle, tools and detection methods of SYN attack, and comprehensively discusses the prevention technology of SYN attack.飞狼 第二季