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深夜时份，一对情侣在湖水中央裸泳，突然被漩涡卷走，其后再发生多宗地层下陷意外。地质学家莲娜认为事有蹊跷，于是深入追查，几经艰辛，终于发觉问题可能源自一个荒废的矿场，该矿场多年前曾发生灾难，有多人死亡，其中一人就是莲娜的哥哥。于是她决定与几个朋友深入矿洞探个究竟。原来矿灾之后，矿场东主并未进行填塞工程，令地底出现一个大洞，导致地面的塌陷事故。 　　事情尚未解决，危机日益增加，公路地层开始下陷，市内的医院和球场出现裂痕，随时倒塌。另一方面，在矿井内进行研究的莲娜决定用炸药炸毁岩层，希望利用砂石填补大洞，阻止地面继续下陷………硬是把这些东西都带回来了。Set the methods in the above multiple factory method modes to static, and call them directly without creating instances.江南长生会为贩卖长生经（保险）举行招聘会。负责人萧萧刀（何赛飞饰）却在招聘会上发现老板梅龙的独生女儿梅小瑶（马伊俐饰）。小瑶不满会中人浮于事，希望建立自己的力量，实行改革。她把刚出师的马小虎（孙耀威饰）也拉入了长生会。长生会的竞争对手--为老堂为争夺业务，不择手段，弄得百姓非常不满，激起小虎等人的正义感。他们在与不老堂的竞争中深深了解对方，也结交了不老堂的朱元、酒楼卖唱的花解语（王艳饰），几人之间产生了错综复杂的情感纠葛。张无忌负手而立。The firewall sets the SYN forwarding timeout parameter (the firewall for state detection can be set in the state table), which is much less than the timeout time of the server. When the client sends the SYN packet and the server sends the acknowledgement packet (SYN + ACK), if the firewall has not received the acknowledgement packet (ACK) from the client by the time the counter expires, it sends the RST packet to the server to cause the server to delete the half connection from the queue. It is worth noting that the setting of gateway timeout parameters should not be too small or too large. If the setting of timeout parameters is too small, it will affect normal communication. If the setting is too large, it will also affect the effect of preventing SYN attacks. This parameter must be set according to the network application environment.NBC续订了芝加哥背景的三部剧《凤城火情》(续订第7季)、《芝加哥警署》(续订第6季)、《芝加哥医院》(续订第4季)。