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小葱忽然心情大好，一边穿针引线，一边竟轻声哼出了小曲儿。这一季对应原著小说第九部和第十部，主人公乌特雷德将夺回祖传领地——贝班堡。State mode and policy mode are like twins. They both encapsulate a series of algorithms or behaviors. Their class diagrams look almost identical, but their intentions are very different, so they are two very different modes. The policy pattern and the state pattern have in common that they both have a context, policies or state classes to which the context delegates the request to execute他的身份，也就限于板栗和小葱两人知道，张家其他诸人都不知道。Ready to take off, I am over Hezhou City. The word GEAR in the picture is the landing gear indication. At present, I am still on the ground, in the goose pond.多谢少主，我想不了那么多，还是先看好眼前吧。So at the moment, We're on another machine, Use the ping command to send a message to the current machine. As shown in the following figure, the ping command can be responded to, proving that the message sent by the ping command has been normally sent to the host where the firewall is located. The IP address of the machine where the ping command is located is 146, and the IP address of the host currently testing the firewall is 156. We will use this environment to demonstrate the operation of iptables.