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Auxiliary Class: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.众人都暗自替他捏了把汗：这脸上蚯蚓似的一条疤痕，人家玄武将军能看上？黄豆见他步履稳健，神态不卑不亢，丝毫没为脸上的伤疤不安，先就有了个好印象。After reading these, I really feel that ghosts are not terrible, but people are the most terrible.不若我们兵分两路，一半与董翳对峙，一半前去拦截援军？有些奇怪是，刘沛公这次竟然没带张良同来，否则子房先生几条妙计或可解燃眉之急。滚滚黄沙掩怒马，大漠孤烟显豪侠。　　书生张君瑞在普救寺里偶遇已故崔相国之女莺莺，对她一见倾心，苦于无法接近。此时恰有孙飞虎听说莺莺美貌，率兵围住普救寺，要强娶莺莺为妻。崔夫人情急之下听从莺莺主意，允诺如有人能够退兵，便将莺莺嫁他。张生喜出望外，修书请得故人白马将军杜确率兵前来解围，但事后崔夫人绝口不提婚事，只让二人以兄妹相称。张生失望之极，幸有莺莺的丫环红娘从中帮忙，扶莺莺月夜烧香，听见张生弹琴诉说衷肠。