In geometry, the rigid motion is described as A mapping of the plane to its own and the distance between A and B is the same as that of A'=M(A),B'=M (B). Management function step by step to complete, and form a cycle of the cycle, which is the basic process of management, which is connected between each function and influence each other, to form a unified organic whole. To achieve management objectives and plans, we must design and maintain a job structure, in this structure, the combination of a variety of business activities necessary to reach the target classification, the management authority granted to each type of business activities necessary to personnel in charge of this kind of work, and the coordinated relationship between the up and down or so, to effectively achieve the goal, also must constantly adjust the structure, the process is the organization. The organization provides structure assurance for management work, which is the premise of personnel management, guidance and leadership and control Lives of acid attack victims The marriage certificates of the children always mention the death or not of their parents. In the most recent civil status records, the date and place of death are even mentioned. Similarly, the death certificates of the children make it possible to know whether their parents were deceased or not, but without more precision.