工频参考电流下的工频参考电压测量中,采用电容分压器作为测量电压装置,其额定电压应与试 发布时间:2018-05-23 14:45 │ 来源:www.tikuol.com 题型:单项选择题 问题: 工频参考电流下的工频参考电压测量中,采用电容分压器作为测量电压装置,其额定电压应与试验电压相匹配,电容量宜选择()。A.500pFB.1000pFC.1500pFD.2000pF
题型:单项选择题 -My mother is ill in hospital.——_______.A.That’s OKB.All rightC.Thank youD.I’m sorry to hear that. 查看答案
题型:单项选择题 .The teacher recommended that every student England party.A. took active part in B. takes active part in C. take active part in D. would take active part in 查看答案