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"This story tells us that we should be industrious, brave, intelligent and witty, and we can live a happy life."Admin.py最好的犯罪心理学家之一：马尔科姆·布莱特，利用他的天赋异禀来帮助纽约警局破案。Table tennis尹旭则是不同，因为越国缺少战马，所以注定了越国骑兵军团在短时间内只能走精兵路线。I nodded at this passage, Understand that what Zhang Xiaobo said is indeed reasonable, It is not a lie, Here I think it is necessary to give you one thing about popular science. So we have to say something digressive: The result of a real bullet hitting a petrol tank is not the same as that shown in most movies. One shot can explode the petrol tank, But this is not the case, Although a pure metal projectile will rub against the air at a speed of hundreds of meters per second to generate equivalent heat, And will produce sparks after hitting the metal oil drum, But none of this is enough to ignite petrol, Especially for gasoline with a large total amount, to ignite gasoline, please remember one thing-open flame must be used. In addition, gasoline is a flammable item, but it is not an explosive item in the true sense. Only after reaching a certain total amount can explosion be caused. If the total amount is insufficient, it can only cause combustion without explosion.2. Dynamically add functions to an object and undo them dynamically. (Inheritance cannot do this. The function of inheritance is static and cannot be added or deleted dynamically.)