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Endothermic theory: When the flame retardant is heated, endothermic reactions occur, such as decomposition, melting, sublimation, phase change, etc., which make the fiber dissipate heat rapidly and fail to reach the combustion temperature.For collaboration files, it is not necessary to check out, as long as you have modification permission, you can modify them.……第七式：破掌式。A TCP connection is a quad, and a connection is uniquely determined by the source IP, the source port, the destination IP and the destination port. Therefore, if C wants to forge the packet from A to B, it should fill in the above-mentioned IP header and TCP header with the source IP, source port, target IP and target port. Here B is the server, IP and port are open, A is the target we want to attack, IP certainly knows, but the source port of A is not clear, because it may be randomly generated by A. Of course, if we can find out the rule of generating source port for common OS such as Windows and Linux, we can still do it. In addition, we can step on the connection port of Car A through a large number of controlled hosts.When performing some abnormal operations, such as stopping the database without reason when reading and writing the database, resulting in abnormal interruption of SQL Server database,只是越国地处东南，与大部分的诸侯相隔甚远，无法联合道一起，起不了多大作用。Return memento;