【简答题】如图所示电路为对称三相电源供电给两组负载,已知对称负载Z=10+j10Ω,不对称负载Z A =Z B =30Ω,Z C =-j30Ω,电源线电压U L =380V,求电压表读数。
【简答题】第60题 What should applicants undertake not to do? Associate their response and participation with any of their __________.
【判断题】政治算术学派是经济统计学产生的第一个学派,也是其正宗学派。()
【简答题】请根据下面的短文回答第 56~60 题: 第 56 题 What is the right time to get to a friend's home tor dinner?
【简答题】根据以下材料回答 56~60 : 第 56 题 What should you do to protect your computer from a virus? You must make sure that you have an______________.
【单选题】已知集合A={x|-2<x<1},B={x≤-2},则A∪B=( )
【简答题】下面,请回答 17~20 题。 第 17 题 According to the speaker,what should the listeners do as soon as possible?