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大儒、才华、魁首、义气，都是扯淡，只有权力才是真的。I waited quietly for a while. Zhao Mingkai recalled it and organized the language. Only then did he open his mouth and said:See, the 6 macro commands just defined are all in it. Is it very simple? I hope I can help you!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 Baidu9. River RedundancyThis flight is flight # 45: Chengdu Shuangliu-Beijing Capital (ZUUU/ZBAA), with an aircraft type PMDG748. I hope you can see Haihan if the flight is not rigorous.Departure Position-Select the position where you want to start the flight. Joystick Support-If you want to use a joystick device on the computer, select and enable the joystick. To change these settings, exit the flight simulator and press Ctrl + Alt + A (+ Option + A on the Mac) to view the flight simulator help. To view this page at any time, press Ctrl + H (Windows and Linux only).