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The Original class is the original class, which contains the attribute value to be saved and creates a memo class to save the value value. The Memento class is a memo class, and the Storage class is a class that stores memos and holds an instance of the Memento class. This pattern is well understood. Look directly at the source code:Taking the opportunity of this year's Qingming Festival, let's talk about the usual process of death. Fully understanding and understanding this process can sometimes help you identify when the people you love begin to reach the end of life, better carry out hospice care, prepare for their funeral, and leave no regret of "children want to support but relatives do not stay". At the same time, identifying irreversible death can also avoid unnecessary medical intervention and the ordeal it brings to loved ones.Standing in the squares on both sides of Baiting, the octagonal five-story pavilion-like wood-like stone pagoda, which is about 200 meters apart, is Quanzhou's East and West Pagoda and is one of the four famous towers in the country. The East Tower is called "Zhenguo Tower" and has a height of 48.24 meters. The name of the West Tower is "Renshou Tower", with a height of 44.06 meters, slightly lower than that of the East Tower, and its scale is almost exactly the same as that of the East Tower. The two towers are treasures of ancient stone structures in our country and are symbols of Quanzhou, a famous historical and cultural city.这是在抗日战争时期一个可歌可泣的爱情故事。当战火蔓延华中的洛平，师范生吴汉生（吕良伟饰）欲随游击队离城参加卫土战斗，为游击队政治部主任张国威（冯淬帆饰）劝止，着他留在学校中联络，团结爱国同学。众人听了，神情振奋不已。C. Business Continuity: It has something to do with application continuity here, except that some enterprises have business periods and non-business periods, but in fact, application services will not be completely shut down. The main considerations here are the response of business peak period, anti-black production, anti-crawler and other recovery methods that affect business availability and continuity.