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There are seven structural modes (6-12): adapter mode, decorator mode, agent mode, appearance mode, bridging mode, combination mode and element sharing mode.For the market, After all, the cultivation of children's thinking ability is still a new field in the education market. Although online children's English has cultivated a market for online learning, making many parents begin to receive online education, the development of the track still needs a process of cultivating the market because parents' awareness of thinking ability cultivation and online learning of thinking ability is not high enough. At present, most of the children's thinking ability line work class organizations still focus on word-of-mouth communication, WeChat circle of friends sharing and customer group fission in terms of marketing and promotion, and have not yet invested in large-scale marketing.The third handshake: the client receives the SYN + ACK packet from the server and sends the confirmation packet ACK (ack=k+1) to the server. After the packet is sent, the client and the server enter the ESTABLISHED state and complete the three handshakes.Article 2 [Scope of Application] These Regulations shall apply to the supervision of the use of medical security funds within the territory of the People's Republic of China.Embedded Script Engine Jx9所以说，儿孙的姻缘一定得他们自己想通才成。