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Let me give you an example: Diaosi Wang Tiezhu moved bricks in Beijing, but he thought he was very close to his girl Lin Zhiling. No, he found the following 10 common contents:LINUX: Redhat uses the variable tcp_synack_retries to define the number of retransmissions, which defaults to 5, with a total timeout of 3 minutes.　　要期待什麽？? This mode is an improvement on the common factory method mode. In the common factory method mode, if the passed string is wrong, the object cannot be created correctly, while the multiple factory method mode provides multiple factory methods to create the object separately. Diagram:Action: Throw the open gas tank to the abandoned warehouse downstairs and then throw the ignition express in, boom宋义嘴巴一动，刚想要说话，又被尹旭毫不留情地打断了：别，别又打着对先王不敬的旗号，给我扣大帽子。Proxy is a noun and Delegate is a verb. Secondly, proxy shows that several objects implement a common interface, while delegate only shows that one object references another object and does not involve an interface.