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恭喜宋令尹。她不要那样的外婆，也不要那样的婆婆。35. The company can regularly organize various social activities attended by all employees or supervisors or above. In particular, the sales and management department is at the grass-roots level and is busy all day. Without funds and time, there is no chance to communicate with employees. It is suggested that the company can use different forms (e.g. Fraternities, parties, suburban tours, etc.) to enhance the friendship and feelings between colleagues at appropriate opportunities. Create a harmonious working environment. To do a better job.这名小镇魔术师对足球毫无兴趣，但要想迎娶一生挚爱，他必须先带领当地球队闯进决赛。大军前行一炷香的功夫，不过两里，便见几十丈外冒出了几个人影，老远挥着刀刃又蹦又跳，同时叫嚣着听不懂的语言。The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From BaiduDeclare business objects and log slices in xml files: