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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.? AWB: Default Automatic White BalanceDownload Address Recommendation:杂货店主人冯寒梅正被匪兵调戏，遇李宏成营长带兵前来搭救。一波未平一波又起。这时，粮仓被烧，火光冲天逼人，李营长领人冲进火海，奋力救粮，冯寒梅将店里的新桶全部献出装水，引得众人称赞，灭火后，二班战士在瀑布下洗澡，突遭土匪袭击，班长壮烈牺牲，神秘的电波不时出现。刚解放的万山县城又处于动荡的变幻中。"It's also our little Charlie's credit!"制作一个游戏，哪有那么简单？陈启，你一个写小说的外行，急冲冲的涉足游戏。