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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.李善优从小缺少爱，与母亲分开住后与四个未成年人组成一个“家”，家有“爸爸、叔叔、弟弟、妹妹”。这些家人都是离家出走的孩子。有一天家里的“叔叔”把家里洗劫了，全家人都认为是善优的错，因为“叔叔”是由善优在网上找回来。善优为了大家而偷了宥丽爸爸的钱，但宥丽爸爸原谅她。善优觉得很感动......宋玉华自老伴去世，不能适应“出门一把锁，进门一盏灯”的生活孤独而抑郁。儿子沈越因出国考察没能参加父该网剧讲述了时光（胡先煦 饰）在机缘巧合之下发现一个古老的棋盘，从而认识了盘踞在棋盘内、历经千年的南梁围棋第一人——褚嬴，并在他的熏陶下逐渐对围棋产生兴趣，并励志成为职业围棋手的故事。项羽见范增答应，心中满是兴奋，说道：我们再商议便是，有亚父在，羽儿万事不愁。　　于是芹泽、纯子和榎本组成了密室案三人组，接二连三阴差阳错地解决了各类密室杀人案，上锁的房间一一被开启。沉默寡言一心研究撬门溜锁的榎本也在一系列的案件中得到了芹泽和纯子的信任和喜爱，而榎本的背后似乎掩埋着什么不可告人的秘密？30. It is suggested that the company organize some middle-level managers to expand their training in the next step, change their ideas, develop their ideas and improve their management ability. (urgent)