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Explain that in the OrderPizza method, we do a lot of things, including calling the CreatePizza method to generate a desired pizza, and then doing a series of operations on the pizza. The key point is that Pizza is defined as an abstract class, which means that in the OrderPizza method we don't care what type this Pizza is at runtime, in other words, this is decoupling. The coupling between PizzaStore and Pizza is uncoupled.欢乐喜剧人第6季First of all, there is a select selection box on the page, then there is an input box for the input purchase quantity, and there are also two display areas, namely, the display area for the selected color and the input quantity, and the next button operation.Statement of Rights:　　莲花被老鸨骗进妓院，老鸨让嫖客给莲花开苞，莲花逃出艳翠楼，被嫖客追上。刘学栋见嫖客欧打莲花，上前打抱不平，嫖客用玻璃瓶刺伤刘学栋，还想扎瞎刘学栋的眼睛，小莲花哀求嫖客，只要不扎刘学栋让她干什么也行，嫖客放过刘学栋。CW已续订《初代吸血鬼》第五季。Source of decimal system: Legend has it that it is ten fingers and two feet. This was stipulated in the past, and now it is stipulated that there are 10 dozen per dozen.