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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.西班牙内战期间，面对因纳粹实验而诞生的吃人丧尸，立场敌对的几位主角必须携手合作，才能度过危机。1987年香港亚视的武侠剧，共二十五集，监制是袁浩泉。总有一些措手不及的事情发生，但也总有一颗治愈的种子在人们心中生根发芽。Weightlifters are in the most full and exciting state of physical strength during the competition. After warming up for half an hour and an hour in the back court, they also lifted more than a dozen or 20 handfuls, which is full of physical strength. However, our amateur training generally lasts for a long time and has a high movement density. Even if we are not used to it or like it, it is necessary to wear a belt after the physical fitness starts to decline in the later period. Don't look after the house and break the world record without you, we don't need this amateur level, don't think so! Also don't think: I squat 150 naked and you squat 160 with your belt tied to your knees, so I think I am actually better than you!瑞秋，一个犹太裔美国医生，和一个阿拉伯裔美国政府官员杰克，在整个中东地区进行着一场徒劳的追逐，试图解决蕾切尔的寻宝兄弟的神秘死亡。从洛杉矶到约旦的沙漠，再到古城佩特拉，他们发现自己被一个叫做阿勒斯顿的世界末日团体所追捕，他们相信瑞秋和杰克拥有失踪的死海卷轴，这可能会导致末日的来临。凌海市发生一起连环杀人案，让刑警季凡与队长熊振男、法医赵清妍等人联手展开调查。然而案件扑朔迷离，始终无法破获。随着调查的深入，季凡逐渐惊觉凶手似乎就在身边，看似简单的连环杀人案，却牵扯出一桩27年前的旧案，被时光掩埋的真相缓缓揭开，杀人凶手正是与季凡朝夕相处的父亲季廷山和哥哥季平，而季平却替季凡背负了27年的复仇重任。随着季廷山被捕，季平负伤逃到海外，季凡追寻他的踪迹来到曾经长大的第二故乡欧洲某国。季凡一边追查季平的下落，一边还要完成组织上委派的卧底任务，找出隐藏在三大黑帮家族幕后的操控人A先生，破解黑帮圣物“圣杯”中的秘密，被卷入欧洲某国黑帮的争斗中。在捷克警方的协助下，季凡终于查到A先生真实身份，而季平的目标居然也是A先生，而这一切也跟俩人的过往有着千丝万缕的关系。