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天启的那些小说，我已经买了十几套。　　四大版块《“乐”见新鲜》为新闻资讯；《“乐”见榜样》是榜样人物专题片；《“乐”暖人间》平凡人音乐故事的的Vlog展示；《越短“乐”精彩》是新鲜、正能量的短视频集锦。We can understand that the responsibility chain mode is a chain composed of processing requests. Requests are passed between these objects in turn until we encounter an object that can process it. We call these objects nodes in the chain. For example, object a sends a request to object b. If object b does not process, it will give the request to c. If object c does not process, it will give the request to d, and so on, until one object can process the request. Of course, if no object processes the request, then the request will leave the chain.Re-understanding OO: Object-oriented programming is an idea to think about software design structure with object-oriented thinking, thus strengthening the object-oriented programming paradigm. Object-oriented features are encapsulation, inheritance and polymorphism. "Do these count?" . So from that beginning, when I design a class, I keep reminding myself of the following three points:抗日战争时期，山东南部枣庄矿区以刘洪、王强为首的一批煤矿工人和铁路工人，不堪日寇的欺压和蹂躏，在中国共产党的领导下，秘密建立起一支短小精悍的游击队，他们“飞车搞机枪”、“血染洋行”、“智打票车”、“夜袭临城”、“打冈村”、“搞情报”、“夺布车”、“上济南”、“下徐州”，活跃在日军侵华战争的主要铁路命脉——津浦线的山东沿线，鼓舞了铁路沿线人民的抗战士气，有力地配合了主力部队的对日作战，老百姓称他们“飞虎队”，他们在八路军中的正式番号是“铁道游击队”。安然（孙雅 饰）和丈夫欧阳一峰（安泽豪 饰）结婚多年，两人共同养育着可爱的女儿蒙蒙（高欣宇 饰），生活虽然平淡，但却充满了幸福。安然唯一的遗憾就是家中比上不足比下有余的经济状况，然而欧阳一峰向来淡泊名利，并不愿意为了获得更好的生活而努力拼搏，小小的失望埋藏在安然的心底，渐渐生根发芽。