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Whether it is file uploading, music or video players, some obvious state distinctions can be found. For example, there are several states in the file upload program: scanning, uploading, pausing, uploading successfully and uploading failed. The music player can be divided into several states: loading, playing, pausing and playing after. When clicking the same button, the behavior in upload and pause states is different, and their style class is also different.The attack revenue of straight-line Batman is lower than that of parabolic Batman. Because the straight line will hit the Batman first, causing damage to overflow. The parabola will hit the Batman first.BIM technology can be used to deal with these hidden dangers in time, thus reducing unnecessary losses, and can quickly respond to and deal with emergencies, and quickly and accurately grasp the operation of buildings. During disaster prevention and rescue in the operation and maintenance phase, real-time data access can be carried out by retrieving BIM database, and emergency response can be assisted in the virtual environment of BIM information model to accurately determine the location of danger. Detailed information can be provided before emergency personnel arrive.这渴望让他感到羞愧和不安，觉得自己实在不堪。　　Just what is it to be an orbit with 4 different poles?大靖朝臣凛然发现：张家这个儿子居然通晓四五个国家语言，虽然有些熟练，有些不够熟练，但他能与在座大多数使臣交谈。