浅谈UPS电源及其维护   总被引：1，自引：0，他引：1  

赵昌秀 《科学大众》2007,(3)

本文介绍了如何提高UPS电源的工作效率、UPS电源的设计原理、影响UPS电源的因素及UPS电源的维护。  相似文献   

A　Goose　With　Only　One　Leg（初三适用）     

赵昌秀 《中学英语园地(高三版)》2002,(Z1)

Once there was a clever farmer. Though he was poor,he decided one day to take a roast goose(烧鹅) to the king as a present. He had not had much that day, and soon the smell of the roast goose became too much for him as he carried it to the king, so he ate one of its legs.  相似文献