跟狗发了生了关系太舒服了

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剧照In my opinion, some variants of SYN cache technology should be embedded into the server operating system as a curing function, and these variants can be deployed together with other solutions (address-based filtering, ACK camouflage firewall, IP security protocol, etc.) when appropriate. At present, many experts are also working on more robust TCP protocols and hope that these supplementary protocols can be deployed as soon as possible.If you don't think the above method is very simple, then we can use shortcut keys to wrap lines, and we can wrap lines by pressing Enter + Shift on the keyboard. Just use shortcut keys where you need to wrap lines.A. Men: air pistol (10m), pistol rapid fire (25m), pistol slow fire (50m), air rifle (10m), small caliber optional rifle 3 × 40 (50m), small caliber rifle 60 horizontal fire (50m), 10m moving target, flying saucer double multi-directional, flying saucer multi-directional, flying saucer two-way;秦末，相县有项梁、项羽(胡军饰)叔侄两人，他们系楚国名将之后，阴蓄反秦大志。同县有一美女虞姬(杨恭如饰)，为秦将所虏，项羽救之，两人相识并产生好感。离相县不远的沛县有一刘邦(肖荣生饰)，三十七、八岁末娶，游手好闲，但结交萧何等一帮豪杰。他为亭长后，娶吕雉(吴倩莲饰)为妻。不久陈胜起义，刘邦、项羽乘时相继起兵反秦。两人初次相逢于襄阳城外，一见如故，相敬相惜。项梁听谋士范增言，立故楚宗室心为楚怀王。刘、项共拥之。后项梁为秦章邯部所杀，项羽报仇心切，率兵北伐章邯。巨鹿一战，项羽大破秦兵。章邯四十多万精粹或死或降。但这时项羽坑杀二十多万投降秦兵，留下残暴恶名。趁项羽攻打秦兵主力，刘邦率先攻入关中，秦王婴投降，刘邦遂取下秦都咸阳。因在前楚怀王曾有先入秦关者封王之约，刘邦和吕雉都希望成为关中王和王妃。范增知道刘邦胸藏大志，劝项羽杀刘邦。项羽表面凶暴，实则忠厚，鸿门宴上不忍加害，刘邦逃过一命。 项羽与虞姬早已两心相许，只因项梁之死而推迟婚期。这是唐伯虎极尽燃烧，最为绚烂的一枪。