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20. Repeated work wastes more time. More time should be spent on work instead of just writing. Fortunately, it is not necessarily possible to do a good job. Regular organization and management personnel can hold seminars to summarize the work and raise some work problems and matters to be coordinated. The departments involved in the problems should keep records and complete the work within a time limit. Our department usually organizes seminars twice a week. Work plans, summaries and daily work logs are submitted weekly, Generally, problems are reported in a timely manner. In addition, the cashier foreman's work is rather complicated. While doing a good job in daily work, he has to deal with all kinds of emergencies, return of goods by customers and replacement of cashiers at the cashier's desk to avoid suspension of the cashier's desk. He also has to sum up the problems in the work and find out the improvement methods. There is not much time to write. I hope the company leaders can consider the time needs of each post and don't just let everyone write it. Each department will discuss it regularly and solve the problem within a time limit. Even if it saves time, it also has efficiency.大众瞬间对太极拳的看法改观，对即将播放的《太极宗师》期待万分。In TCP implementation, when receiving the SYN request from the client, the server needs to reply the SYN + ACK packet to the client, and the client also needs to send the confirmation packet to the server. Usually, the initial serial number of the server is calculated by the server according to certain rules or adopts random numbers. However, in SYN cookies, the initial serial number of the server is obtained by hash operation and encryption of the client IP address, client port, server IP address, server port and other security values, which is called cookie. When the server suffers from SYN attack and makes the backlog queue full, the server does not reject the new SYN request, but replies the cookie (SYN serial number of the reply packet) to the client. If it receives the ACK packet from the client, the server subtracts 1 from the ACK serial number of the client to obtain the cookie comparison value, and performs a hash operation on the above elements to see if it is equal to the cookie. If equal, complete the three-way handshake directly (Note: At this time, you don't need to check whether this connection belongs to the backlog queue).自从上次比赛以来，几个月过去了。阿德里安娜离开了奥斯卡，现在他和加比……还有米卡住在一起。瓦伦丁从壁橱里走出来，试图在他人生的这个新阶段感到快乐。芭芭拉和利奥在奥雷莉亚的诉讼中被剥夺了财产，但他们收养了卡门，现在有了一个“三胞胎”降世神通发生在一个有东亚色彩的武术和元素操纵世界。该剧将以前美国国内卡通传统上分割的东亚、东南亚、以及西方文化混合，给美国国内卡通增添了新气象。116. X.X.34Judging from the harmfulness and attack behavior of DDoS, we can divide DDoS attack methods into the following categories: