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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.　　一次偶然中，金恩东震惊的发现自己的外表竟然变成了二十五岁的样子，并没有认出金恩东的顺心在误打误撞之中将他当成了跟踪狂。金恩东向游泳队的教练寻求帮助，在证明了自己的身份之后，教练决心协助金恩东找到变身的方法。金恩东忽然想到了自己于博物馆之中邂逅的名为李泰利（朴艺珍 饰）的神秘女子，或许自己一夜成人的秘密就藏在与她的相遇之中。宋义虽然不爽，英布的面子也是要给的，淡淡道：本官没事，不过府上伤亡四十多人，要是我查出来是谁做的，一定将她碎尸万段。皮肤黝黑大大咧咧的橿原杏平（宫下荣治 配音）、温婉可人足智多谋的八月一日静香（东山奈央 配音）、带着面具十分神秘的织部僧（松本忍 配音），活泼可爱身手敏捷的四月一日伊织（津田美波 配音），一群怀抱着拯救人类之重大理想的战友们聚集到了潜水艇之中，为了夺回本该属于人类的领地和敌人展开了激烈的战斗。Attack-Life《大染坊》讲述的是陈寿亭这位印染业奇才的奋斗故事，他虽不识字，却勇于创新，智计百出，深明大义，忠心爱国。可以说陈杰的《大染坊》既是个人奋斗的深情礼赞，也是一曲民族工业的悠长挽歌。