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State mode refers to allowing an object to change its behavior when its internal state changes. The object seems to have modified its class. Divide this sentence into two parts by commas. The first part means to encapsulate the state into a separate class and delegate the request to the current state object. When the internal state of the object changes, different behavior changes will be brought about. The second part is from the customer's point of view, the object used has completely different behaviors in different states. The object seems to be instantiated from different classes, but in fact this is the effect of using delegates.Security executives are never willing to talk about these attacks because they do not want their remarks to attract more attention to the enterprise. They even worry that providing basic information on defense strategies alone will be enough to attract attackers to come and find security vulnerabilities.黎水瞪大眼睛：还穿脏衣裳？那……那还费事洗什么？黎章扑哧一声笑道：里面换干净衣裳不就成了。大校工程师宋红梅到基建兵318团视察工作。她没有按照团里的安排住进宾馆，而是直奔隧道挖掘基地。在基地她与一营官兵同吃同住同劳动，在她的技术指导下，隧道提前一个多月打通。期间，她的丈夫王振华千里迢迢从北京倒船倒车赶到工地来看望宋红梅，被宋劝回。6.4? SYN? Cookies