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6. Delete EventsFill in a specialist volunteer　　轮滑少女陈冕出于对短道速滑的热爱，主动请求加入初创的青岛短道速滑队。“轮转滑”困难重重，在磕磕绊绊中，陈冕一路成长，从一个非专业选手，成为了独当一面的青岛队主力队员，并进入国家队，也终于获得了一直不看好自己的父亲陈敬业的认可。没想到的是，陈敬业和郑凯新竟曾是国家队亲密无间的战友，曾共同为为国争光的目标而挥洒青春和汗水，又因背负着过于沉重的夺金压力而分道扬镳。[News] On February 14, an article entitled "Spring Festival Chronicle: A Diary of Returning Home from a Worsening Northeast Village" was published in WeChat Public Number of Caijing Magazine. Author Gao Shengke wrote at the beginning of the article: "The miscellaneous notes of my hometown that I want to write are somewhat cruel and sad. Unfortunately, this is not a fabrication, but a true portrayal." "The way my hometown fell to the enemy and the pathos of this difficult song are absurd." The various phenomena depicted in the article in the rural areas of Northeast China are shocking, and even "the old people at home are not as good as dead. While they are suffering from the crime of living, several peasant women are plotting a group of expeditions to other provinces to" arrange guns ". As soon as the article was published, Guangming, China Youth, China and other media reprinted it one after another, causing hot discussion among netizens.3. Integrated learningThat is to say, a total of false syn messages will occupy the TCP preparation queue for 63s, while the semi-connected queue defaults to 1024, which is different by system default and can be viewed by cat/proc/sys/net/ipv4/tcp_max_syn_backlog c. That is to say, sending 200 fake syn packets per second without any protection is enough to burst the semi-connection queue, thus preventing the real connection from being established and responding to normal requests. The end result is that the server has no time to ignore the normal connection request-denial of service.The following terms and definitions apply to this part of QJ/OKRW (OUCW) 017.