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One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.本剧的故事围绕汇集了最优秀专家和最先进设备仪器的警方罪案鉴证中心展开，以何书杰、秦朗为首的一群警官，他们毕业于刑警学院和医学院等高等学府，掌握着法医学、遗传学、生物学、人类学的尖端知识和技术，怀着对罪案鉴证事业的热爱，奔走于各个刑事犯罪现场，进行犯罪现场调查和重建，战斗在没有硝烟的战场。他们常常面对冰冷的尸体和无言的物证，为案件办理提供科学严谨的证据，他们的鉴定结论和检验意见决定着案件的侦查方向甚至是直接认定和否定罪犯。他们虽然没有直接面对穷凶极恶的犯罪分子，却要常常忍受常人所无法忍受的恶劣工作环境，勘察、解剖高度腐败的尸体，承受被微生物侵害健康的危险，还要在诸如电击、爆炸、矿井、煤气泄露等现场，遭遇电击、中毒等危险。在这样的工作中，他们不仅有大夫治病救人、严细认真的医德，更展示了秉公执法、不畏权势、察微析疑、科学鉴定的意志和品德。一代武术宗师、精武门创始人霍元甲突然逝世，霍师傅生前最喜爱的五徒弟陈真（李小龙 饰）匆匆赶回奔丧，在师傅的棺椁前，陈真悲痛欲绝，暂时终止了和小师妹（苗可秀 饰）完婚的计划，并且不相信师傅死于胃病和感冒的结论。日本虹口道场馆主铃木宽在霍师傅头七之日，派人送上写有“东亚病夫 ”的牌匾，并且出言大肆侮辱精武门，被激怒的陈真随后赶到虹口道场，大败众日本武人，并踢碎了租界公园门口“华人与狗不得入内”的招牌。虹口道场马上派人至精武馆报复，陈真为避免连累师门只得暂离精武门。机缘巧合，陈真发现了日本人害死师傅的证据，他怒不可遏，连毙数名凶手，成为日本人的眼中钉，为了保全精武门，陈真选择独立承担，他在租界外国势力的枪口前纵身跃起……一部真实反映市场营销和广告人职场生活状态的职场励志剧，职场人生，不一样的职场拍摄风格！Let's put it this way, In the next attack, For the first time, the Vietnamese army and this kind of thing mixed up to fight, This also confirms our previous guess: This is not a native animal, But some kind of "weapon" domesticated by the enemy, As for the course of the battle, Just the same as before, It's just that we have the upper hand, Because the support of the artillery group is coming, More than ten kilometers away, 152, 130 artillery shells into the base into the base to "throw" this way, In front of the position, the floating soil lifted by the shell explosion can reach less than half an arm when it is thickest. Therefore, although the number of Vietnamese troops who failed to sneak attack and changed to storm attack was much larger than ours, There is that kind of thing "help", but in the face of strong firepower, it is still difficult to move. Apart from the upset of the bombed people, there is basically no other end. Anyway, we are especially relieved. I also say that this is revenge for all the dead comrades and Zhou Xiaolin, whose leg has been abandoned. "……嘉靖感觉脑仁开始疼了，明日召首辅同来定夺。