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BIM's information model can be used by managers to query, modify and call, synchronously update system information, and better maintain equipment and buildings. The operation and maintenance of buildings usually include monitoring, communication, ventilation, lighting, elevators and other systems. If the above equipment and pipelines fail, they may affect the normal operation of buildings and even cause safety accidents.Although the above code can meet the requirements, it is not easy to expand and difficult to read. If I want one or two conditions in the future, if I want to recharge 300 yuan successfully, I can win the 150 yuan red envelope, then I have to change the code inside at this time, so the coupling between business logic and code is relatively high, and I accidentally correct the wrong code. At this time, we try to use the responsibility chain mode to transfer objects in turn to realize it.遂摇头失笑道：姑娘那些手段，对付皇上还可以。05　留学生略一问，便猜出内幕，气得大骂道：蠢货……田——清——明——老匹夫——老夫与你势不两立。而此时的，周大和陆明浑然不觉，依旧沉浸在接受投降，大功一件的喜悦之中，全然没有注意到危险正在逐渐逼近。　　第一季《优步之战》改编自Mike Isaac的纪实文学《热血野心/恣意橫行(台) Super Pumped: The Battle for Uber》，由《亿万》的两位主创Brian Koppelman及 David Levien负责。