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两年前，毛海峰回九州前三日，杨长帆找到了汪直，送上了即便是汪直也难以想象的大礼——徐海余部万余众，王翠翘，外加当儿子。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 Baidu我要将东南的兵力分布搅混，首尾不能呼应。今日的败局他竟早有预料，还预想到自己会在睢水大败逃亡，奈何自己执迷不悟就是看不出来。“乱世桃花逐水流”，被誉为当世三大美人之一的甄宓，外貌出众，神采飘逸，令她不由自主地一生于情海中飘荡，亦悲亦喜。嘉靖深知，这样的海瑞，绝对是一位忠臣，天下第一忠臣。