两个完全相同的电热器,分别通有如图所示的交变电流,则它们的功率之比为( ) A 发布时间:2017-08-07 07:50 │ 来源:www.tikuol.com 题型:选择题 问题: 两个完全相同的电热器,分别通有如图所示的交变电流,则它们的功率之比为( )A.4:1B.1:C.2:1D.:1
题型:选择题 ________ take the aeroplane all the way, they decided to fly to Vancouver and then take the train from west to east across Canada.A.Other thanB.Rather thanC.More thanD.Or rather 查看答案