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The term "fire-fighting technical service institutions" as mentioned in these Provisions refers to social organizations engaged in fire-fighting technical service activities such as maintenance and testing of fire-fighting facilities and fire-fighting safety assessment.可是，赵锋、李敬武等清南村出来的少年们却轰然大笑起来，一下子就冲淡了肃穆萧杀的气氛。　　李尚允饰演男主人公徐道宇，是一名建筑学专业的讲师，拥有总是能令人愉快的性格。徐道宇与妻女享受平凡的生活，突然卷进某件事件中，陷入困顿，并且崔秀雅也慢慢渗透进他的生活。For example, if we want to implement a JS function, Such as form validation, Then if we don't use the policy pattern in javascript described in the previous chapter to solve the form validation encapsulation code, It is a temporary form validation function written by itself. Certainly without any encapsulation, Then at this time, we will pop up a prompt to the user for whether the two values are equal. If there is a form verification on another page, their judgment method and business logic are basically the same, but the comparison parameters are different. Should we consider writing a form verification code again? So now we can consider using the template method pattern to solve this problem. Common methods are extracted, and different methods are implemented by specific subclasses. This design code also has the advantages of stronger scalability and better code ~Distribution, obtaining traffic by distributing contentThe events before x=3, well understood, are case 2.