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尉缭道：越王有没有听说过一句话，敌人的敌人便是朋友？所以我们有合作的基础。　　在这个成长的年纪，有每一位青年青春燃烧的热血故事，不虚伪，不掩饰，不服输，乐观向上，充满希望的闪耀青春！The SYN-ACK retransmission number server sends the SYN-ACK packet. If the customer confirmation packet is not received, the server retransmits for the first time, waits for a period of time but still does not receive the customer confirmation packet, and retransmits for the second time. If the retransmission number exceeds the maximum retransmission number specified by the system, the system deletes the connection information from the semi-connection queue. Note that the waiting time for each retransmission is not necessarily the same.Due to the increasing organizational cost of attacks, some malicious attacks may even become cover activities for larger-scale and more ferocious security threats.Maintain the synchronization of material flow and information flow in production, so as to achieve the right quantity of materials, enter the right place at the right time, and produce the right quality products. This method can reduce inventory, shorten working hours, reduce costs and improve production efficiency.Action:As the database has been downloaded above, the content to be downloaded this time is much smaller.