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Power varies with race:OCP (Open-Closed Principle) principle emphasizes that a software entity (class, function, module, etc.) should be open to extension and closed to modification. That is, every time there is a change, the behavior of the existing type should be enhanced by adding new code instead of modifying the original code.In fact, WCF content has been read very early, and many predecessors in the blog park have written it very well. However, I think I still need to summarize it myself, because only in this way can knowledge be my own, and how well others write it, after you read it, it is actually someone else, so I encourage you to make a few points (for these points, it is also a reminder to yourself):真正的商贩不是卖商品，而是卖品性。有人卖自己的知识，有人卖自己的劳动，有人卖商品。从这个意义上来讲，无论卖什么，谁不都是商贩？那么，成功的商贩和失败的商贩之间有什么不同之处？1) dockerClient ClientIt's all 1W panels. You can only play 290 in melee. Mages can play 460.激情燃烧的年代里，千千万万的热血青年心目中最希望的是参军当兵。同时读书无用混日子在学校里蔓延…… 　　一天，小流氓锛子调戏女同学，班上平时“吹牛拔份”的男生全都蔫了，只有冯家昌)—人挺身而出，拎着两块砖头走到锛子面前，要单挑，让对方先拍他。他不等对方反应，自己给了自己一下，锛子被镇住了…… 　　在县城读书的刘汉香(闫妮饰)悄悄爱上了冯家昌这个农村的“穷小子”。但两个家境悬殊的年轻人的爱情遭到大队支书刘国豆的百般阻挠…… 　　母亲临终前交代冯家昌要把三个弟弟带出农村，过上好日子。冯家昌认为要改变命运，只有当兵去……冯家昌真的入伍了，刘国豆警告他，有“四个兜”(提干)了，才允许女儿跟着他…… 　　新兵连里，冯家昌急于表现，为抢先劳动，把笤帚藏在被窝里；又因替农村兵石心锁鸣不平，与城市兵谭建华打架，受到关禁闭处分。胡连长教育冯家昌：优秀军人的标准只有一个，思想突出、军事过硬、忠诚勇敢！ 　　农村兵冯家昌与城市兵谭建华这对冤家在部队的大熔炉里比学雷锋，比军事演习、比训练方案……冯家昌入伍八年，刘