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Responsibility chain mode: pay attention to encapsulating object responsibilities, support changes in responsibilities, and realize transaction processing by dynamically constructing responsibility chains.　　东北某农场内，生活着一群来自四面八方、身份各异的知青。他们将最好的年华献给了这片黑土地，却不知自己的明天将在何方。恢复高考的消息传到这里，让年轻人们的心再次躁动起来。适逢农场负责人老迟（孙海英 饰）正在酝酿修路计划，只要在建设中取得良好表现就有机会受推荐去年大学。知青们为此蠢蠢欲动，而另有打算的老迟却把机会给了成分不好的女孩陈琼（周显欣 饰）。原来陈琼和老迟的爱将潘志友（王学兵 饰）是一对情侣，他打算借此将二人拆散，让潘扎根于此。然而充满着理想的年轻人是会紧紧抓住这个难得的机遇，还是随波逐流接受命运的安排？State mode and policy mode are like twins. They both encapsulate a series of algorithms or behaviors. Their class diagrams look almost identical, but their intentions are very different, so they are two very different modes. The policy pattern and the state pattern have in common that they both have a context, policies or state classes to which the context delegates the request to execute——u——c——t——x——t——[UC電子书]正文结束[UC电子書]——u——c——t——x——t show_style();。《家庭档案》是一部描写现代家庭情感的电视剧，导演和主创人员皆为电视剧《红蜘蛛》的原班人马。每两集一个故事，通过对十个具有典型性的“问题家庭”的案 例分析，向人们提出警示——该以怎样的态度面对家庭矛盾，以维持家庭的圆满，避免悲剧的发生，促进社会的安定团结。