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For the operation and maintenance phase, BIM technology can be used to realize virtual reality, asset statistics, space management, building system analysis and disaster emergency simulation. BIM model can improve the efficiency of operation and maintenance, reduce costs, improve the service life of subway and avoid operation and maintenance risks.高凡又问道：那你自己呢，你这么心疼狗，怎么也吃？小苞谷道：我自己的狗，我吃了它的肉，它就长在我身上了，我们就永远在一起了。From her position, it can also be shown that her IQ is average. She has worked for eight years, but she is still an ordinary employee. The supervisor has not mixed up. Obviously, the office is greasy.After that, I will introduce several common basketball on the market:Since Pizza is still an abstract class, when we create a subclass of FactoryPizzaStore, we should also implement a specific subclass inherited from Pizza. If we only create a subclass of FactoryPizzaStore without a corresponding subclass of Pizza, what does our pizza shop sell?哎呀。央视少儿频道推出系列卡通片《大嘴巴嘟嘟》。制作方称这是一部关注现代儿童成长的大型原创动画片，主要人物为一位聪明绝顶、模仿能力超强的5岁幼儿园小朋友“大嘴巴嘟嘟”的成长故事。