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Fires cause huge losses to people's lives and property in our country every year. The application of flame retardant fabrics can effectively delay the spread of the fire. Especially in public places, the use of flame retardant fabrics can avoid more casualties. The difference between flame retardant fabric and ordinary fabric is that it can reduce the burning speed of textile materials to different degrees and stop burning quickly after leaving the fire source, which can reduce fire accidents caused by textiles and avoid unnecessary losses.汪滶喘着粗气，几乎要哭出来，口不能言。一把手……老丁很快反应过来，那杨公子可就有的受了。特务组织要派年仅27岁的“黑桃Q”回大陆组织一次特别的特务行动，黑桃Q要了一大笔钱，他要先去一趟日本。黑桃Q找到了他的干爹,是这名老特务把黑桃Q带进军统的。那时黑桃Q还是个孩子，黑桃Q说自己要潜回大陆，黑桃Q说自己一生的事业、前途、本事都是干爹给的，他怕没有机会回来孝敬干爹了，所以专程来日本看望干爹, 黑桃Q跪着给干爹敬酒,干爹很高兴，喝了酒，却中毒倒地。 黑桃Q对着干爹的尸体说：不是你，我不会变成鬼……This chapter is the last lecture on design patterns. It will talk about the third design pattern-behavioral pattern, with a total of 11 types: policy pattern, template method pattern, observer pattern, iterative sub-pattern, responsibility chain pattern, command pattern, memo pattern, state pattern, visitor pattern, intermediary pattern and interpreter pattern. I have been writing about design patterns for a long time. At last it's halfway through, Writing a blog post is a very time-consuming thing, Because I have to be responsible for the readers, Whether it's graphs, codes, or representations, Everyone hopes to write it as clearly as possible so that readers can understand it. I think both I and the readers hope to see high-quality blog posts come out. Starting from myself, I will stick to it and update it continuously. The continuous motivation comes from the continuous support of readers and friends. I will do my best to write every article well! I hope everyone can give opinions and suggestions continuously and jointly create a perfect blog post!"What was your first reaction when you saw these flying insects?" Asked