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《纸钞屋》描述一群抢匪袭击了纸钞大楼，抢走 24 亿欧元，成为西班牙史上一次最惊天动地的完美抢案。0 Register multiple delegate instances or methods for the event with + =HandballIn 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.Yellow 100% +33%敢问经费人力到位，沥海一月可产多少支？杨长帆不假思索道：统统到位的话，月产千支不在话下。