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当前学科：医院感染管理办法
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空气培养（沉降法）的采样时间是什么？
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旅游需求基本特征是促使旅游企业（）的主要因素。
电压在36V以上和由于绝缘损坏可能带有危险电压的电气设备的金属外壳、构架、铠装电缆的钢带（或钢丝）、铅皮或屏蔽护套等必须有保护接地。
由于老年人肾功能减缓易发生不良反应的药物是（）
计算题：一台离子交换器直径为D=2.5m，树脂层高H=1.6m，树脂工作交换容量E=800mol/m3，再生酸耗R=55g/mol，求再生时用c=31%的工业盐酸多少千克？
现代流行病学的病因概念为（）
Learn from Mistakes You can only learn from a mistake after you （1） you’ve made it. As soon as you start blaming other people (or the universe itself) you distance yourself （2）any possible lesson. But if you courageously stand up and honestly say “This is my mistake and I am responsible” the possibilities for learning will move towards you. Admission of a mistake, even if only privately to yourself, makes learning （3）by moving the focus away from blame assignment and towards understanding. This advice （4）counter to the cultural assumptions we have about mistakes and failure, namely that they are （5） things. We’re taught in school, in our families, or at work to feel guilty about failure and to do whatever we can to （6）mistakes. This sense of shame explains why many people give up on their goals: they’re not （7） for the mistakes and failures What’s missing in many people’s beliefs about success is the fact that the more （8）the goal, the more frequent and difficult setbacks will be. The larger your ambitions, the more dependent you will be on your ability to overcome and learn from your mistakes. But for many reasons admitting mistakes is difficult. An implied value in many cultures is that our work represents us: if you fail a test, then you are a （9）. If you make a mistake then you are a mistake. Learning from mistakes requires three things: putting yourself in situations where you can make interesting mistakes; having the self-confidence to admit to them; being （10）about making changes. （8）内应选（）
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继电保护可分为：主保护、后备保护、辅助保护、异常运行保护。