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If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.Because the scenic spot has tropical rain forest ecology such as "bangen", "strangulation", "parasitism" and "stem flower", it is called "Xishuangbanna in southern Fujian" by tourists. Named after "Potential Niu Mu, Pregnant Zai Huai Bao", it is a provincial nature reserve that integrates the unique natural landscape and forest landscape in mountain areas. There are more than 1800 species of vascular plants belonging to 214 families, more than 200 species of wild vertebrates belonging to 96 families and 73 species of wild butterflies in the area. Niumulin is a natural forest bathing place and oxygen bar, and is a tourist summer resort. The application for a national 4A-level eco-tourism area has passed the provincial acceptance. At present, there are tourist hotels, animal and plant specimen halls, tourist shopping streets, bear gardens, high-altitude sliding ropes, archery ranges and other tourist supporting facilities in the area. It has become a key eco-tourism area in southern Fujian, with 100,000 people visiting it every year, which is a model of eco-tourism construction in coastal areas of our province.Twitter & ins: @ lily_sayonara泥鳅无法，只得抱着她来到金富贵的跟前。《平安是福》是首部以百姓日常生活中的安全题材为内容的大型室内情景剧。由国家安监总局政策法规司、总局宣教中心、中国安全生产报社和北京水星经典文化传播有限公司联合制作，由中国科学文化音像出版社的出版发行。2008年11月21日在央视2套黄金档期播出。That is, its startup mode can be directly configured in Fanifest or defaulted to standard, and the task stack can be set at will.