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In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.《椿文具店~镰仓代笔物语~》是NHK电视台2017春季档日剧。以日本古都镰仓为舞台，讲述以代写书信维生的年轻女性成长的故事。主人公鸠子时隔八年回到故乡，继承去世祖母的“椿文具店”，尽管小店名字是文具店，实际上却是一家“代书铺”，带人写漂亮的文字，代书新人鸠子在这里发挥她的才能，接受各种不同的书信委托，小小的幸福让鸠子感到很充实，开始了与以往不同的新人生。由多部未华子主演，2017年4月14日播出。虽然澎湖比泉州远了一些，但再没有互相约时等候的耽误与被明廷和散贼攻击的危险。让他把军队留在新安，让他孤身入关中，我们有的是机会。《走过路过莫错过》湖南经视频道根据湘籍作家何顿的小说《就那么回事》改编的电视剧，以侯清清、侯菲菲两个姐妹花、和七个男人的情感故事为主线，讲述一个死了都要爱的感人故事。斯琴高丽、孙琳、邵桐、亚丽等主演。电影以鹧鸪哨、陈玉楼探秘瓶山半个世纪后的湘西为背景，讲述了自龙岭迷窟回来后，胡八一为救身中剧毒的大金牙，带领摸金铁三角二入湘西瓶山，寻找江湖传说中消失已久的六翅蜈蚣，获取救命内丹的故事。