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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.《9号秘事》是一部英式黑色幽默悬疑喜剧。一部只有短短的几集，每一集都讲一个独立的故事。每一集只有短短的半个小时，却以十分紧凑的剧情和片尾的意外结局让观众大为赞赏。QQ Flying Car-Baidu Encyclopedia三浦春马（29）将主演7月起每周二晚9点开播的火9新剧『TWO WEEKS』，本剧改编自13年播出的同名韩剧『两周』，春马饰演的主人公·结城大地在过去因杀人未遂的罪名而服刑，现在对人生失去了希望的他浑浑噩噩的度过着每一天，而这时在他面前却出现了人生中唯一心爱、却又因为某件事而单方面告别的女性，被告知从她那里生下了属于他们的女儿·小花，可惜小花现在患有白血病而需要匹配血型，幸运的是结城的骨髓和女儿完全匹配，在两周后就可以动手术了。与此同时，结城被人陷害作为杀人犯逮捕，于是他开始了逃亡的这两周时间来拯救自己的女儿。另外，首次主演该档作品的春马在剧中还将挑战激烈的格斗戏及各种变装造型。对什么杨继盛张经王忬也是毫不留情。故事开始于一九三四年的山西省汾西县，小伙计出身的陈海子收货款时遇到正在执行潜伏任务的共产党区党委书记雷钧，这次偶遇为他心中埋下了一颗红色的火种。为加入共产党，他不惜以身犯险，潜伏在晋军兵工厂，几经考验，终于成为一名共产党员并改名为陈志，同时也收获了同是党员的东家之女黎梅的爱情。但黎梅表哥，身为晋军特务的商见诚的欺骗使得共党地下组织瞬间瓦解，陈志九死一生脱离险境，却被党组织戴上“特务”的嫌疑，自此一生背负着这个根本不属于他的包袱。在同志们的帮助下，陈志建立起汾西最早的游击队伍，从此开始了八年抗战、四年解放战争，结下了一群对他无比信任的战友同志，立下无数大功却始终被“历史问题”影响。解放后，陈志当起了县委书记，他鞠躬尽瘁，为当地民生的发展立下汗马功劳，他对革命理想的忠诚感动了身边的战友、亲人，甚至对手。终于，在所有人的不懈努力下，陈志的“历史问题”得以澄清。你们忘了，这仗是咋打起来的？还不是元国人先跑到咱们靖国来烧杀抢掠。