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The above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.《从海底出击》续订第二季。(3) If it is not possible to install the mast light or ring white light on the centerline of the ship's head and tail, the mast light or ring white light of a motor boat of less than 12m in length may be displayed off the centerline, provided that its side lights are combined into one and shall be installed on the centerline of the ship's head and tail, or as close as possible to the centerline of the mast light or ring white light.电视剧《青春突击》由辽宁省恒亿影视传媒有限公司出品。由郑学伟任总制片人；张明智、张子祥、李洋任总监制；包洪建、张利晨、侯英武任总策划；赵亮任艺术总监；刘艳臣、丁郦任指导；由钱禧泷、许小行、李毅、王增奇、那志东、夏侯镔等联袂主演；著名演员斯琴高娃、王虎城、侯天来、王建国倾情出演。故事讲述了在松江湖上游的大山深处，驻扎着一支武警中队，肩负着保卫松江大坝和丰白发电厂安全任务。在家娇生惯养、平素游手好闲、调皮捣蛋、个性张扬的富二代新兵李小帅，生性平庸却不敢直面现实的胖墩腾飞，出生农村、虚荣心极强的刘小宝，清高自负、一心梦想当上狙击手的周围……几个来自不同家庭、秉性迥异的年轻人，怀揣不同的人生目标聚集到这里，共同学习、共同训练、共同生活。在一次次矛盾纠葛与心灵交汇中，却阴差阳错的卷入一场跨国犯罪团伙盗取国家商业机密的阴谋陷阱……正义与邪恶、亲情与友情、道德与法律，多方纠缠、交相争斗。他们能否不辱使命、逃出陷阱、满血复活、芳华无悔？剧情扑朔迷离，跌宕起伏，扣人心弦，发人深思。在离奇的谋杀案发生后，两个不搭调的小镇警察着手调查众多嫌犯，也随之揭开了隐藏的政治手段、个人企图和可怖神话。这个故事是关于一个在孤儿院长大的漫画家大树，他唯一知道的“温暖和快乐的感觉”是通过这封信。大树看见一只流浪猫，就把它带回家，但是有一天，那只猫变成了人。很明显，他来自“耳朵族”。阿淼已经把大树的无聊生活变成了混乱，但在混乱中，大树学会了真正的意义终于感受到了温暖和幸福的感觉~~改编自特雷西胡的BL漫画《喂,看見耳朵啦》