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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.　　Maggie Q等也回归出演新季，运作人换成了Neal Baer(《法律与秩序：特殊受害者》)，讲述Kirkman总统将面临一门重要的政治学问——竞选，会聚焦当今世界的政客竞选程序和手段；抹黑战术、辩论、竞选资助，“假新闻”等，“民主，如我们所知的那样，将命悬一线”。天才和疯子常常只是同一个人的两种描述。神探陈佳彬(刘青云饰)就是这样一个人物，和天才画家梵高一样，他也曾经割下自己的耳朵。尽管破案无数，侦探能力超凡，却终被世俗认定是疯子一个，提早从警局里退了休。探员何家安(安志杰饰)接到了一桩棘手的案件。案发地在树林，两名警员王国柱(李国麟饰)和高志伟(林家栋饰)办案之后，只有高志伟平安归来，而王国柱和他的枪则神秘失踪。何家安请来陈佳彬为他指点迷津，却未料到陈佳彬的“疯子”行为又一次在侦探过程中表露无遗。他断定高志伟就是此案凶手，并把推理建立在他自己大量的想象之上。他自称能看到高志伟的“七宗罪”，正是这些罪恶把高志伟引向犯罪之路。然而，要何家安相信这一切并不容易，因为他已经被高志伟的演技所迷惑……如果对方名不副实，也就是随手一剑的事。50,000 Yuan [Exclusive] HNA Wants to Sell Land and Return 2 Billion Country Garden Rongchuang as Potential Buyers, [Exclusive] Defaulted on Multiple Oil Payments, HNA Was "Cut off Oil" by Suppliers, [Exclusive "HNA" Big Slimming "Two Major Industrial Groups Merge Total Assets Exceeding 600 Billion] Fu Linlin and Luo Songsong胡宗宪走后，赵光头凑上前来，神色略显警惕：船主，莫让当官的搅浑了咱们的水。These entrepreneurs have both old and new friends. Of course, the meeting is not casual-many of them are doing or thinking about things that are at the front end of the industry and even reflect future trends. The meeting between the party secretary and them often has an important intention: to attract leading enterprises and high-quality enterprises to Shanghai in order to optimize the industrial layout of Shanghai.