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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.影片主要讲述了1941年，渊子崖村囤积八路军公粮的事实不胫而走。日本侵略者蜂拥而至，企图攻占渊子崖，夺取公粮。村长林凡义率领村民用土枪土炮浴血抗击，展开了惨烈的渊子崖保卫战。谱写了一曲中华平民抗日的辉煌篇章。　　1920年，联邦政府颁布禁酒令后，公开售卖酒类商品成为一种违法行为。在新泽西州的西南部的大西洋城没有任何法律。贯穿全城的道路的两侧，布满了各式旅馆、夜总会、娱乐中心、赌场、妓院、剧院，其规模堪与纽约的百老汇相提并论。Nucky（史蒂夫·布西密 Steve Buscemi 饰）是这里的老大。除了保护伞大西洋城警长Elias（谢伊·惠格姆 Shea Whigham 饰），一大帮靠黑帮势力发家的老板，还有一群宣誓效忠于他的打手。Nucky小心地谋划着自己在私酒生意链条上的位置，与各种黑帮组织为争夺黑市控制权展开了你死我活的斗争。黔北大山深处，东坪西坪两村合并为一个大村——凤凰村，具有创新意识的原东坪村副主任林心竹，与争强好胜的原西坪村副主任罗金福同时进入村委会班子。观念的不同，性格的差异，使两人很快成为矛盾焦点，林心竹以大局为重，凭着实干、巧干赢得了凤凰村村民的认可。一年后，林心竹被选举为凤凰村村委会主任，她带领村民创建的“富、学、乐、美”四在农家的活动，使凤凰村发生翻天覆地的变化。《巨虫列岛》是由パッショーネ负责制作的剧场版动画作品。《时代周刊》曾刊文道：“如果16世纪有八卦小报，亨利八世一定是每期的封面人物。”的确，这位才华横溢且私欲膨胀的英国国王，一生娶了六个妻子，在历史上曾留下无数瞩目的争议。