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Sky Noble Sapphire Pearl但是其中也不乏自己的私心的缘故，所为的不就是这称王称霸，裂土封王嘛。TCP (Transmission Control Protocol) is a connection-oriented, reliable, byte-stream-based transport layer communication protocol defined by IETF's RFC 793. In the simplified OSI model of computer network, it completes the functions specified by Layer 4 Transport Layer.板栗笑道：你们就乐吧。刘氏也笑道：别说带不来，就算能带来，家里也要留些东西。State mode refers to allowing an object to change its behavior when its internal state changes. The object seems to have modified its class. Divide this sentence into two parts by commas. The first part means to encapsulate the state into a separate class and delegate the request to the current state object. When the internal state of the object changes, different behavior changes will be brought about. The second part is from the customer's point of view, the object used has completely different behaviors in different states. The object seems to be instantiated from different classes, but in fact this is the effect of using delegates.