青梅竹马是消防员第一季免费观看翻译/正片/高速云

脚踢着一根树枝，竟借着树枝这轻轻一弹之力，整个身子突然变了方向，倒射而出。　　同样出生富豪之家的晏薇，有着美艳的脸蛋和性感的身材，自小便是众多男生追逐的目标。她从一进入东林学院开始，就迷恋上了杜谦永。然而杜谦永却并未对她有一丝动心，这让她感到很挫败，她无视青梅竹马的林镜对自己的深厚感情，想尽办法去争取杜谦永的爱。杜谦永因着和林镜的铁哥们儿关系，愈发疏远晏薇。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.唉……要是尹旭真的就这么死了，他还真的有些后悔了。唉，这顾涧竟然……青鸾公主道：顾涧可是谨慎的很。Let's look at the implementation class first:How is the click event represented by code?