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不急，所有货都不急，有一分是一分。1. OrderType (Recharge Type), if the value is 1, it means the user who recharged 500 yuan, if it is 2, it means the user who recharged 200 yuan, and if it is 3, it means the user who did not recharge.根本不知道吕文心在说什么。The ancients advocated "learning while learning" and "unity of knowing and doing", which means to practice and apply what one has learned. Among the hundreds of outstanding entrepreneurs I interviewed, including Jack Ma, I found that everyone has his own unique learning methods and habits. Among them, purposeful learning and deliberate practice and practice in work and life are in deep agreement with this book.按理说讲究的家庭，男人聚餐女人是没有上桌资格的，有人妻身份的妇女，更加不方便与其他男人同桌，但杨长帆他大爷不讲究，杨长帆也就干脆不讲究了。崔益钧和李三顺是一对生活在韩国京北山区中的老夫妇，年届耄耋的他们仍无法放下手中的活计，终日往返小家和田地之间。相比能说会道且经常抱怨的老婆，崔益钧显得沉默寡言。他童年时一条腿遭受枪伤，导致行动不便，农活更成为一大难题。幸亏一头老黄牛常伴左右，四十多年来，老黄牛不仅帮夫妇俩分担大部分劳动，还使他们得以供子女上学，崔益钧老人对黄牛疼爱有加，甚至胜过妻子。春去秋来，烈日寒霜，时间在重复中缓缓流淌。转眼经年，夫妇俩年事已高，步履蹒跚，而操劳多年的老黄牛也即将走到生命的尽头……Although this kind of attack has appeared for 14 years, its variants can still be seen today. Although technologies that can effectively combat SYN flooding already exist, there is no standard remedy for TCP implementation. You can find different implementations of different solutions to protect the application layer and network layer in today's operating systems and devices. This paper describes this attack in detail and looks forward to and evaluates the anti-SYN flooding methods currently applied to end hosts and network devices.