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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.一九五零年，抗美援朝时期，国民党反动派制定了破坏我铁路运输及军用物资的“春雷计划”行动。为粉碎敌特阴谋，以韩立冬和刘玉娥为代表的安东铁路公安人员在我党领导下密切合作，慢慢接近特务组织。特务头目周春山频频用计，韩立冬见招拆招，终将特务组织一个个连根拔起，却招致周春山的暗中追杀。在公安处长郑新民的精心策划下，韩立冬成功打入敌特内部，凭借过人的侦查手段，找到日本关东军当年藏在安东的秘密军火库地图和一份极其重要的潜伏特务名单，及时铲除一直深潜在公安内部的特务“老刘”。经过一系列紧张而激烈的战斗，周春山及其特务组织最终被一网打尽，而被美军炸毁的鸭绿江大桥也在群众帮助下及时抢修完毕，从而保证前线物资供应。讲述因无法停止的欲望造成悲剧、无辜失去家人的一个女人，在交错的命运和爱情中展开复仇的激情罗曼史电视剧。4. At this time, iTunes on the computer side appears, detects an iPhone in recovery mode, and releases the home key.某天，彼方遭到正体不明的怪物们袭击。救了他的人是神秘的蓝发少女空。她向彼方寻求帮助，对他说“只有你能拯救世界！”。为了从企图利用黑暗之力肆意操控世界的千寿等人手里拯救世界，彼方、空、吸血鬼兄妹冬夜和夕奈，与龙马、神威、半藏等怪物一同面对赌上世界命运的战斗。几位性格迥异又都青春洋溢的刚刚入学的高一新生，在一系列蠢萌事件中度过了真实又搞笑的的高一生活，并在其中认识到了自身努力的必要性。19