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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.这时，明月高悬，月光倾洒到吕馨身上，像是为她披上一件朦胧轻纱，纯洁而妍丽，清冷而高艳。可是项羽却将越国封给了尹旭，摆明了是给将尹旭封到边陲之地，同时也是想故意jī怒无诸和姒摇，借东瓯和闽越的刀来对付尹旭。该剧讲述了拥有欲望的女人与被抛弃的女儿再会之后的故事。Non-combustible fibers: asbestos, glass fiber and metal fiber.李敬文见那红豆羹熬得跟糊似的，又细又香，舀一勺喝了。第一集的故事发生于Wilson的女友去世八周 以后。很明显，在这种打击下，他已经了无生趣了，不管医院工作多忙，或者House怎么刺激他，他都完全提不起精神来。面对这样一个活死人，当House遇到麻烦，或者需要与人分享各种好主意或馊主意时，他该投向谁的怀抱呢？好在这个难题在第二集就有了答案——某个尖酸刻薄的私家侦探的出现，使House有了臭味相投的拍档。此人由Michael Weston倾情出演，其 狡猾邪魅的程度，据说几乎不输于House本人。