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.; % JAVA_HOME%\ lib\ dt.jar; % JAVA_HOME%\ lib\ tools. Jar;但这首诗的感情，却是比任何言语上的表白，都要来得惊人。From this point, we can draw a conclusion: the Vietnamese army has not only planned for a long time to use "living biological weapons", but also conducted a lot of research and drills, even live ammunition tests, before using them. According to the obtained data, it has formulated corresponding usage methods and tactics, and may even form relevant written regulations and regulations.Apple TV+原创剧集《看见》正式续订第二季。她似乎永远高高在上，令人不可仰视。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 BaiduHive Input and Output Library Hive-IO-Experimental