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(5) Assigning employees without corresponding qualifications to engage in social fire fighting technical service activities;Ctrl + O: Open the image file　　一周很快过去，爱德华想要出钱把她安置在纽约一所公寓里，维维安干脆地拒绝了Telecommunications听得人群一静，有个傻呵呵的家伙还往女娃那边瞅，连声问道：在哪？我瞧瞧是哪个。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.却用力过度，拽出萝卜的同时，也一屁股跌坐在田里。