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Absorption of free radicals: Flame retardants act as transfer bodies of free radicals to inactivate them and prevent the reaction of free radicals.Treasure Pearl Attribute:2.1A 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.老太太心软，想扶娘家一把。青鸾公主听了，身体不可抑止地颤抖起来。The green arrow at the bottom indicates that it can be passed. Some ticket gates are two-way. When someone comes towards him, the green arrow will turn into a red fork.