合理安排时间

二十世纪以来，世界各国交往频繁，同时也争端不断，为了不危及国际安全，保证国际局势稳定，联合国向冲突区派出了维和部队和维和警察。2000年，应联合国秘书长的请求，中国政府决定首次向东帝汶派出维和民事警察。Link: https://www.zhihu.com/question/44712155/answer/98597003Based on BIM technology, it can dynamically display the installation of important parts in advance and provide virtual reality information for construction scheme discussion and technical exchange. Subway construction may have an impact on the surrounding buildings. BIM technology can simulate the impact of subway construction on the surrounding buildings. Combined with reinforcement technology, it can judge whether the arrangement between various components is reasonable, control the construction progress, carry out comprehensive quality inspection and observation on the construction, dynamically simulate the change trend, and put forward improvement measures.CorrectionThree implementation classes:The adapter for the interface is as follows: Sometimes we write an interface with multiple abstract methods, When we write the implementation class for the interface, All methods of the interface must be implemented, This is obviously wasteful at times, Because not all methods are what we need, Sometimes only a few are needed, In order to solve this problem here, we have introduced the adapter mode of the interface. With the help of an abstract class, the abstract class implements the interface and all methods. However, we do not deal with the original interface, but only get in touch with the abstract class, so we write a class, inherit the abstract class and rewrite the methods we need. Take a look at the class diagram:The third parameter is the error message returned when the validation fails.