Semiconductor January 1998LA SeriesRadial Lead Metal-Oxide Varistors for Line Voltage OperationFeatures•Recognized as “Transient Voltage Surge Suppressors”, UL File #E75961 to Standard 1449•Recognized
试题(4)I.Vocabulary and Structure.(20points)Directions:There are 20 incomplete sentences in this section. For each sentence there are four choices marked A, B, C and D. Choose one answer that best compl
阅读理解 An earthquake(地震)may happen at any time.It's best for us to know what to do, where to be safe and who to contact during the earthquake.The following information will help you. Remembe