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Bridging mode is to separate things from their concrete implementation so that they can change independently. The purpose of bridging is: Decoupling abstraction and implementation, So that the two can be changed independently, Like our commonly used JDBC bridge DriverManager, when JDBC connects databases, it switches between databases without moving too much code or even at all. The reason is that JDBC provides a unified interface, each database provides its own implementation, and a program called database driver is used to bridge. Let's look at the diagram:4! E $E* i1 i4 q:? ; C1. On the morning of January 7, South Korean President Moon Jae in and the director of "1987: The Day Dawn Comes" watched the film together with the main actors and also greeted the actors on the stage.1931年夏，从西山女中毕业的林道静为了追求自由，选择了抗婚出逃，走投无路的她觉得天下之大却没有她的容身之所，茫然之下想要投海自尽，被大学生余永泽救回。热情而多才的余永泽一下子感动了林道静。在北平，林道静结识了进步学生、共产党员卢嘉川、江华等人，明白了许多革命救国的道理。而在这些问题上，余永泽却和自己有着截然不同的观点。在一次学生运动中，卢嘉川因为余永泽的不肯帮助而遭到被捕。林道静毅然离开了余永泽，加入到了风起云涌的爱国学生运动中。当局一次次的陷害和逮捕让林道静成长为一名成熟的学生运动领袖。在又一次的爱国游行运动中，林道静走在队伍的最前列。古老的中华大地，回荡着这代青年用鲜血和生命谱写的青春之歌。Some common behavior methods will be defined in the state class, and Context will eventually delegate the request to these methods of the state object. In this example, this method is buttonWasPressed. No matter how many state classes are added, they must implement the buttonWasPressed method上水村村主任钱大宝在为女儿办毕业宴会的时候，发生了食物中毒，全村几十人一下住进来了医院，而引起食物中毒的罪魁祸首是用污染的水浇灌出来的青菜。人命关天，但钱大宝却不相信这个事实，虽然上水村只有他弟弟钱二宝开的一个工厂，但他相信他弟弟的话，这个工厂有排污设备。而承包水库养鱼的满一花却一直盯着钱二宝的工厂不放，因为污染在水库里表现得最为明显，她养的鱼在市场中卖不上价最后竟然无人要了。A large number of controlled hosts are used to send a large number of network data packets to the attacked target, so as to cover the broadband of the attacked target and consume the network data processing capability of servers and network equipment, thus achieving the purpose of denial of service."Enterprises should focus on the attack itself and make plans in advance to deploy the response process. They can also collect internal attack information and provide it to suppliers, thus forming a common attack confrontation alliance," Tsantes suggested.