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Observer mode: pay attention to encapsulating object notification, support the change of communication object, realize the change of object state, notify and update the objects that depend on it.39. X.X.53In the traditional subway construction, collision inspection can only be implemented after the design drawings of various specialties are summarized, which is time-consuming and labor-consuming and affects the project progress. Using BIM technology, collision inspection can be carried out on the pipelines of the building before construction, clearance and pipeline arrangement scheme can be optimized, hard collision can be eliminated and soft collision can be avoided as much as possible, and error loss and rework can be reduced.没有人知道，越王尹旭到底说了什么，竟然将心灰意冷的无诸发生了这样大的改变，简直是不可思议。一个一个带有寓意的故事，或许看完以后我们都会有所反省，开播以来至今收视率一直不低，作为深夜节目，有的集里面会有些恐怖的因素，不过却是说出了我们生活中的很多道理。药师谷医女穆兰清意外救治了一只受伤的白猫，对方却在康复之后悄悄离开了药师谷，为了寻猫，穆兰清意外碰上前来药师谷找麻烦的魔教反派，危急时刻，白猫化身的女侠——陆桐出现，解救了穆兰清并在药师谷中小住了下来，两人也在相处中成为了至交好友……雪花飘落，寒风萧瑟，四重奏的悠扬旋律荡涤且治愈着他们每一个人的心……