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In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.1945年4月中旬，吴家村的平静忽然被打破了。村里开始不断出现诡异之事：村民吴振堂家蒸好的一桶米饭莫名其妙地不见了；村民竹竿家的衣服和长老吴茂吉家的腊肉也不翼而飞；更有村民铜罐子家的狗被人杀死在村路上；接着，吴振堂在河里发现了外出村民的尸体……这一系列怪事让淳朴的村民感到疑惑和恐惧。2912该剧以追捕叶三天为首的越狱逃犯为线索，表现我公安局118专案组里的四名刑警的大智大勇，为了侦破危害广大人民群众的两起人命案件，做了大量细致、周密的调查，渐渐将目标锁定了以叶三天为首的五人犯罪团伙，并终将这个团伙绳之以法。此剧热情讴歌了以姚长军、夏天、候小雨、杨文来四大名捕为代表的公安民警的英勇善战，无私奉献的可贵精神。该节目比传统刑事案件报道更有情节性和悬念性。《CSI》的专职顾问伊丽莎白·德瓦恩是一位曾在洛杉矶安全部门供职长达15年的犯罪现场调查人。该节目收视率之所以居高不下，41岁的德瓦恩功不可没。另外，《CSI》已成为美国警方的必备学习教材，连英国苏格兰场、日本警卫厅以及法国警局都视之为反恐教材。　　峰不二子从不动摇。