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TCP is connection-oriented, and a connection must be established between either side before sending data to the other. In TCP/IP protocol, TCP protocol provides reliable connection service, and the connection is initialized by three-way handshake. The purpose of the three-way handshake is to synchronize the serial numbers and acknowledgement numbers of both parties and exchange TCP window size information. The process of shaking hands can be represented by the following figureThe park is divided into four areas, namely Taoling Chunxiao Scenic Area, Jinshan Scenic Area, Konggu Fanyin Scenic Area and Landscape Coordination Scenic Area. Its construction period is from 2003 to 2010. Since the construction of the park began at the end of 2002, Taoling Chunxiao Scenic Area, located at the entrance of the park gate, has been completely completed and is currently the main scenic area for tourists to visit. Jinshan Scenic Spot has also been basically completed and tourists can visit it. The East China Sea Kannonji and Great Peach Blossom Mountain in Konggu Sanyin Scenic Area will complete the transformation of landscape forests next year, so long as the hiking trails are perfected, you can play.与此同时，各种各样棘手案件纷至沓来，银行抢劫案、文物展览会盗窃案、矿井爆炸案、宗教团体事件……无一不对莱特曼提出最严峻和最危险的考验。改编自法国著名的童书，此前这部书就已经多次被拍成电视剧和电影。故事发生在二战期间的阿尔卑斯山脚下的小镇上，讲述了小男孩塞巴斯蒂安驯化灵犬雪莉的故事。这里位于法国和西班牙交界，大地被皑皑白雪，一切都那么宁静祥和，直到纳粹士兵的到来。在小镇上有一只叫 做雪莉的小白狗和叫做塞巴斯蒂安的小男孩，他们出生在同一天。这两个初生时互不相关的小生命，在无形命运的拉扯下，几年后被紧紧的连繫在一起，成了彼此相知并深深相惜的好伙伴。这是一次永恒友谊的历险，也是一个足智多谋而又令人感动孩子不平凡的故事。这是一个小男孩寻找母亲、一位老人追寻过往、一个抵抗战士寻找爱情、一位年轻女子寻觅奇遇、一个德国军官寻求宽恕的离奇旅程。这是灵犬雪莉与塞巴斯蒂安的生活..Http://www.jiemian.com/article/2011799.html玉米却想，他手上捧个碗，那不成了小要饭的了？于是，又跟大娘买了个包袱，包了二十个馒头——娘说肉包子冷了就不能吃了，吃了生病——再把碗也装进去，然后绑在小灰的身上，一圈一圈缠紧。"Teacher, when I synthesize crystals, I need to find different conditions to synthesize them, but there are too many tests. Do you have any better methods?" "What do you synthesize crystals for?" "Of course, it is to test its performance." "Then why do we stick to the need to synthesize crystals before testing properties? We can test properties with the results of each time. Maybe we can find better substances, can't we?" "Ah! Yes, thank you, teacher, I'll try it!" In an exchange with Mr. Sun Yimin, the teacher proved once again the correctness of the sentence "Don't stick to books and documents" while solving the problems of the team members.