经典欧美gif动态图

Let me explain the role of these classes: MySubject class is our main object, Observer1 and Observer2 are objects that depend on MySubject, and Observer1 and Observer2 must change when MySubject changes. The AbstractSubject class defines a list of objects to be monitored, which can be modified: add or delete monitored objects, and when MySubject changes, it is responsible for notifying the objects that exist in the list. Let's look at the implementation code:Among them, one of the more common attacks is CC attack. It simply and roughly sends a large number of normal requests, exceeding the maximum capacity of the server and causing downtime. What I encountered was a CC attack. At most, about 20 IP addresses around the world sent requests in turn, with the number of requests per address ranging from 200 to 300 times per second. When I read the log, I felt that those requests poured in like a flood. In the blink of an eye, there were a lot of requests. In a few minutes, the volume of the log file increased by 100MB. To tell the truth, this is only a small attack, but my personal website has no protection, and the server is still shared with others. This kind of traffic immediately goes offline.In the last article, the 19th report of the "Standard Answer" pointed out that the urbanization rate has increased by 1.2 percentage points per year, and the _ _ _ _ _ _ _ _ agricultural transfer population has become urban residents.No.22 Wu Kangren该剧讲述的是大唐贞观年间，苏凤父子反唐，薛仁贵元帅奉命征剿却惨遭奸人所害，其子薛丁山请缨，以无敌之势夺得帅印，与母亲及妹妹出发西征的故事。在《薛丁山》中，“百万大军会战锁阳城”、“罗通盘肠大战”、“智取怪兽七杀阵”、“巧破金光八卦阵"、“三休三请樊梨花”等等脍炙人口的经典名段都将以全新的视听体验形式摆在观众面前。该剧一方面讲述了薛丁山如何将朝廷一帮世子“官二代”从无所事事、武功平平的纨绔子弟磨炼成武功高强、冲锋陷阵的优秀主将的过程，另一方面该剧又巧妙地融入了薛丁山以国家大义为重，胸怀坦荡地赢得了三位才貌出众的奇女子的爱慕，甘愿由敌人变为结发之妻的传奇爱情故事。本剧通过刘三姐不平凡的经历，不为人知的故事，讲述了刘三姐的传奇故事，展现了广西的民风民情和秀美的大好河山。刘三姐是民间歌手，乐于助人，聪明美丽，她巧断葫芦案，解救使女香草，用“鹦鹉偷簪”、“巧断猫案”，智斗贪官县令。她在柳州传歌，去邕城参加南国歌会，又“矮人寨智救逃婚妹”、“风雨桥同唱礼仪歌”。在大唐特使召见时，大唱“警世真歌”，为民请命，为民代言。土司桂万山、秀才张伟望、阿龙等人帮助三姐渡过重重难关。而对三姐怀恨在心，一心报复的慕仁环则用尽阴谋诡计，迫害三姐，最后被一一击败，落得可耻下场。黑暗中，刘黑子父子和孙铁带着两个人来到上房。