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Still in sequence, the following is the record of the engagement between position 149 and "living biological weapons":Having said so much, I don't know if I have made it clear. Let me conclude here:船下众人一睹徽王府船主真容，皆是心潮澎湃。For interface programming, a lot of changes that may occur in the system in the future can be isolated. Why? If the code is written for an interface, he can implement the interface with any new class through polymorphism. However, when the code uses a large number of specific classes, once new specific classes are added, the code must be changed. Violating the opening and closing principle.Buckeye flowers have different colors, generally yellow, orange and pink. Why do flowers of the same plant have three colors? This is actually the way Buckeye flowers tell bees and bumblebees whether they are popular at this moment. Those flowers with nectar and waiting to be pollinated will appear yellow, which is an irresistible color for insects. When pollination is over, the flowers will slowly turn red, because bees and bumblebees cannot see red, thus the flowers will disappear in their eyes.马警长名叫马大军，自从被任命为海川市桃源居社区警务室警长后，在这个“小社区大社会”里，他面对着形形色色的人，千头万绪的事。因他“一根筋”的傻，领导骂他是“马大哈”；因他处理民间纠纷别出心裁，有人夸他有智慧；因他爱民矻的憨实，老大爷、老大娘视他为亲儿子；因他的热情与真诚，社区女孩叫他哥，甚至以死相逼非他不嫁……。本剧因马警长的演绎，使严肃的公安工作有了诙谐、幽默，在令人捧腹大笑的故事中体现出一个普通民警对工作的热爱和幽默的智慧，成功塑造“马警长”爱民、亲民、近民的可爱形象。