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5, that is, the three-person round robin, winning 2 games, this is the firstWe know that TCP protocol opens up a relatively large memory space backlog queue to store semi-connection entries. When SYN requests continue to increase, and this space causes the system to discard SYN connections. SYN cookies technology is designed to enable the server to process new SYN requests even if the semi-connection queue is full.钟离昧的五千人马则是跟随在身后，一旦有情况随时接应。　　张琪全无恋爱经验，笨头笨脑的追求只能弄出笑话。马勇只好传授追求前妻的必杀技！张琪用马勇的方法应付晓红的考验，却微妙地令马勇仿如跟前妻重新谈一次恋爱！As the representative of action games, DNF's combat system is its greatest feature. Different from previous MMORPGThe 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 BaiduListenTo