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Intercept a section of network cable and burn it under the network cable with a lighter. If the outer skin of the network cable has flame resistance, the outer skin of the network cable will gradually melt and deform, but it will not burn, and generally there will be no black smoke. If the network cable is fake, or if the outer skin does not have flame resistance, the network cable will be lit in a short time when the lighter is used to burn, and black smoke will be generated and there will be a great taste. This kind of network cable obviously does not meet the safety standards.However, crocodiles' short, rounded and sparsely arranged teeth do not have the function of cutting flesh. Their main function is to hook and inject the skin of prey during hunting to prevent prey from escaping. Land carnivores pay more attention to chewing, so they do not have such function.Re-understanding OO: Object-oriented programming is an idea to think about software design structure with object-oriented thinking, thus strengthening the object-oriented programming paradigm. Object-oriented features are encapsulation, inheritance and polymorphism. "Do these count?" . So from that beginning, when I design a class, I keep reminding myself of the following three points:01　少年の国Business Innovation Design (STEP 4): To make up for the opportunity gap, business design innovation is required, including developing new products, implementing new business models, adopting new competitive strategies, etc. Business design can help us to design a business model that can seize market opportunities to achieve strategic objectives and the product mix strategy that should be adopted.这几天她都是这样：早上两个窝头，她只吃一个，一个给板栗，晚饭也分一半给他。If you don't want to use the subway card, Xiaobian will tell you how to buy a single subway ticket.