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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.《同居男女》讲的是一个俏房东和四个极品租客之间的囧事和趣事，故事以他们的“同居生活”为主线，折射当下年轻人的人际价值观和爱情观。德国电视二台(ZDF)三集迷你剧《选帝侯大街63》的第三季。以战后五十年代经济奇迹来临前的柏林为背景，讲述的保守母亲和三个待嫁的女儿的家庭故事，围绕着家庭私营舞蹈学校展开严苛道德原则、对新价值观的需求和性爱启蒙构成的多重矛盾。此季中各个主人公的思想意识和生活状态都发生了翻天覆地的变化。by:meijubar.net　　苏志燮剧中饰演天才医生出身，后来变成医疗诉讼律师的韩一涵一 角。他本是拥有-般外科.胸部外科，两个领域资格的天才医生，实力出众，拥有不亚于模特的身段，穿医大褂就像穿名牌大衣一样，就算在高强度工作，人力不足的胸外科工作也保持微笑，对待同僚患者非常亲切，是个人性魅力和实力具备的卞硕大学医院的王牌医生。至少在4年前他是这样记录的一个人，后来他成为了医疗诉讼律师，开始着手调查4年前疑问事件的真相。First of all, let me explain what DDOS is.　　本片根据英国作家劳伦斯的同名小说改编，获得法国电影恺撒奖5项大奖。