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原来是来看望蝉儿师妹的。If an attacker sends a large number of SYN requests with fake source addresses, the server side will consume a lot of resources to handle this semi-connection, and saving traversal will consume a lot of CPU time and memory, not to mention retrying SYN + ACK on IP in this list. TCP is a reliable protocol, and messages will be retransmitted at this time. The default number of retries is 5. The interval time of retries is doubled from 1s to 1s + 2s + 4s + 8s + 16s = 31s respectively. After the fifth time is sent out, it will take 32s to know that the fifth time has timed out, so the total is 31 + 32=63s.地下世界第一季……立即摆了个架势，将右手放在腰部，两眼盯着香荽，喊道：准备好了？香荽将袖子挽起，露出雪白一段皓腕，小拳头捏紧，也凝神盯着他的手，嘴里道：准备好了。For ships limited to draft, in addition to the lights stipulated in Article 23 for motor ships, three red lights or a cylinder may be vertically displayed at the most visible place.In order to ensure the suspense of the competition,齐宝厨不学无术，仅靠烧的一口好菜混到酒楼厨子的位子，陆艺珍的到来，让他都掉了主厨的位子，只好在酒楼对面摆摊卖臭豆腐，他与陆艺珍的梁子也就接下，两人相爱相斗，宝厨的厨艺也在这过程中逐渐成长。