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In fact, in the past two years, not only has online children's thinking ability training been highly praised by capital, but also interactive game APP and offline mode training institutions related to thinking ability training have received financing one after another.沈悯芮轻轻点了下女儿的脸蛋，但沈乐是无辜的。In the system, the client often needs to interact with multiple subsystems, which causes the client to change with the change of subsystems. At this time, the appearance mode can be used to decouple the client from each subsystem. Appearance mode refers to providing a consistent facade for a group of interfaces in the subsystem. It provides a high-level interface that makes the subsystem easier to use. For example, the customer specialist of Telecom can let the customer specialist complete the services such as charging telephone charges and modifying packages without interacting with various subsystems by himself. The specific class structure diagram is as follows:林聪转头一看，原来是周菡主仆，正站在身后，月光映照着她们朦胧的身形。因此更要抓住机会，最好是一举降服李左车，让他为自己所用。SkatingIn a tcp connection, Rst means reset, which is used to close the connection in case of abnormality. When the sending end sends rst message to close the connection again, it does not need to wait for all the datagrams in the buffer to be sent out, but will directly discard the data in the buffer and send rst message. Similarly, after receiving the rst message, the receiving end will empty the buffer and close the connection, and does not need to send ack message for confirmation.