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女护士吕琴在医院值班室内神秘被杀。其丈夫王刚悲痛欲绝。随着对案件的调查，吕琴身前的一桩婚外恋情被渐次揭开。到底谁是凶手？是吕琴的昔日情人？还是对吕琴有隐约好感的院长？尸检结果确认凶器是手术用的骨凿，而骨凿很多医生都有。谁能料想，真正的危险，却来自身边……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.惟馨老师，我们网站非常有诚意想要邀请你。大型电视剧影子在行动是一部以上个世纪的抗日年代为背景，反特悬疑战争类型的影视剧！剧中讲述了抗日初期，我国东北被日本帝国主义占领后，小日本的天皇为达到吞并全中国的目的，以最首席研究官佐佐木和最高执行官山田惠子为首的情报机关，进行实施一项代号为“P计划”的秘密行动，利用药物将敌战区江城抓回来的几十名女孩子，进行洗脑和控制，以及采用了一系列地狱般的残酷训练方式，培养成杀手跟日特间谍，进行情报收集与暗杀行动。幽岚和美丽便是“P计划”中的实验品之一。The eldest son of the Lins不等子婴回答，拱手道：大王请恕罪。