Nowadays, many hospitals have medical power supply to prevent some special situations. Besides hospitals, there are also some restaurants and other large-volume power supplies which have their own backup power to prevent the sudden occurrence of some conditions to delay customers and store business. The teacher told us a lesson about the importance of medical power supply when we were studying. In fact, we didn’t know much about medical power supply before or after the teacher told us the lesson, we all knew the importance of medical power supply and used it. It’s also a skill that a health care worker must acquire or else he can’t do his job well.