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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.Tourism poverty alleviation, as an important part of the national poverty alleviation strategy, has become a powerful starting point and an important support for poverty alleviation in many regions. Ha Xuesheng, director of the program department of CCTV's financial channel, said that "Charming China City" helped the transformation and development of small and medium-sized cities and brought real value to the cities. The cities participating in "Charming China City" are mainly three or four lines. The program focuses on small and medium-sized cities that are "bred in an inner chamber, with no one knowing her" and gives them "timely help" in publicity and promotion.《魔法少女奈叶第四季 ViVid》以奈叶收养的女孩薇薇欧为主人公。故事讲述了“JS事件”之后，曾经的空中王牌奈叶收起羽翼暂作休息，而刚进入魔法学校初等科的薇薇欧在掌握了魔法基本知识后，收到了奈叶和菲特赠送的专用法器“神圣之心”；而另一边，自称为“霸王”的神秘人物英格威特，正准备掀起一股新的波澜……Oil magnate Rockefeller once said a word:精明冷静的首领达奇（礒部勉 配音），个性刚强的双抢手薇拉（丰口惠美 配音），开朗淡泊的机械师本尼（平田广明 配音），在这些神秘人物的围绕下，洛克逐渐找到了同伴的感觉，同时，一条充满了危机与冒险的道路也在他的面前展开了。我说你就不能把脚好好洗洗干净嘛？哎呀。CBS正式续订剧集《犯罪现场调查：网络》。