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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.毕业后，进入社会的他们差别逐渐拉大，苏韵锦忙于工作，程铮则抱怨其没有时间陪自己，误会和矛盾不断，终于让苏韵锦下定决心分手。程铮在苏韵锦离开的日子终于明白：爱是平等，是尊重，是信任。他放开家庭所给与的一切，凭借自己的力量打拼出一番事业，同时默默为苏韵锦付出。当苏韵锦回头时，发现程铮还在原地等她，两人终成眷属。黑主学院是一所有名的寄宿制学校，学校分为普通部和夜间部。夜间部的人员各个都是精英学员，并且都有超美型外表。但其实夜间部的学生都有个特殊的身份：吸血鬼！并且这个身份不能给普通部学生知道。理事长黑主灰阎的义女和普通部学生的黑主优姬和青梅竹马的锥生零守护着这个学院，处理人类学生与吸血鬼接触时所出现的麻烦。而在零的内心深处，则痛恨着吸血鬼，因为四年前他的家人被吸血鬼所杀害，只有他零奇迹般的活了下来。而优姬又对曾救过自己性命的贵族吸血鬼玖兰枢产生好感。围绕着优姬谜样的身世，零身为吸血鬼猎人却成为吸血鬼的内心挣扎和对血的渴望的矛盾及其特殊的体质，纯血族的枢学长对优姬特殊的关怀和对零的憎恨，3人之间的微妙关系将会有如何的发展呢？During this period, due to changes in nerve sensation and metabolism, some people may produce some "strange" sensations. For example, ketone bodies produced by fat decomposition may make people feel a mild sense of excitement. Even if you don't eat continuously, you won't feel hungry or thirsty. Therefore, you won't feel pain because you don't eat.上世纪50年代，由于国内外形势的发展变化，中国自主的核工业计划正在如火如荼地进行当中。在这样的背景下，一列来往于首都北京与西北核基地之间的神秘火车承担起了运送核专家前往核基地的一系列秘密任务。北京市公安特勤所所长龙飞进入到护送核专家行动组并担当了第一次运送任务的负责人，漂亮的女乘务员辛红羽对龙飞一见倾心，然而列车上的四位核专家对国家核武器研发的整体计划极为关键，龙飞责任重大，不敢有丝毫懈怠。龙飞在列车上发现并抓捕了破坏运送核专家任务的犯罪嫌疑人，在突审的当口列车突遇前方铁轨上的包裹，龙飞带人急忙赶去，不料列车突然爆炸，四位核专家当场殒命……龙飞在案件审查过程中遇到核科学家杨佑亭的女助手谢宝音。杜明明是别人要给龙飞介绍的女朋友，然而却在龙飞出差期间与他的同事加好友肖克确定了恋爱关系。在列车铁轨上发现的包裹被证实为遭到肢解的人体躯干，一系列的碎尸案件的频发令火车爆炸案的侦破变得扑朔迷离……碎尸案的真凶终于浮出水面，凶手尹大龙异常凶残狡猾，在经过精心策划后，凶手设计劫持了秘密运送的核专家杨佑亭5. Anti CSRF Token……唏嘘过后，左都御史擦了把汗问道：还请徐首辅明示……这些把耳根子磨出老茧的罪名都不要。