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Another end-host-based solution is to shorten the time between a TCB entering the SYN-RECEIVED state and being recycled because it does not enter the next state. However, an obvious disadvantage of this scheme is that the attack can take advantage of ACK-SYN lost packets due to congestion or ACK packets completed by handshake, so that legally connected TCB will be recycled because the host is busy retransmitting these packets (because SYN-RECEIVED time is reduced). In addition, there is only a linear relationship between how much time the administrator reduces the SYN-RECEIVED state and the attacker's contract awarding rate. For the above reasons, this scheme is not recommended.徐克版的《笑傲江湖之东方不败》是武侠片中的经典，塑造了一个惊艳万分的东方不败。贞妇贵殉夫，舍生亦如此。皇上趁着伤势沉重，就不要管事了，这白脸就让微臣来唱。毕业后，进入社会的他们差别逐渐拉大，苏韵锦忙于工作，程铮则抱怨其没有时间陪自己，误会和矛盾不断，终于让苏韵锦下定决心分手。程铮在苏韵锦离开的日子终于明白：爱是平等，是尊重，是信任。他放开家庭所给与的一切，凭借自己的力量打拼出一番事业，同时默默为苏韵锦付出。当苏韵锦回头时，发现程铮还在原地等她，两人终成眷属。Similar to the development of children from appearance and color to older children, they can be classified according to concepts. For example, if they know the concept of "food", no matter what kind of vegetables they look like, they should be classified into one category. The classification of biology has also developed in this way. The earliest method is to identify and distinguish species according to phenotypic characteristics, and to classify them step by step according to the degree of phenotypic similarity, so as to establish a classification system that is easy to retrieve. This is the principle of phenotypic classification. However, the problem of phenotypic classification is that it is difficult to reveal the essential laws of things. Many creatures with very different shapes may have kinship relationships. For example, the online sentence "When I knew sunflowers belonged to Compositae, I collapsed" is what it means.