如图所示电路中,S1闭合,S2断开,L1、L2是两个完全相同的灯泡,若将S2闭合 发布时间:2017-05-24 19:31 │ 来源:www.tikuol.com 题型:选择题 问题: 如图所示电路中,S1闭合,S2断开,L1、L2是两个完全相同的灯泡,若将S2闭合后,L1的亮度将A.不变 B.变亮C.变暗D.如何变化,不能确定
题型:选择题 I got close enough to hear them speaking Chinese, and I said "Ni Hao " just as I ____ do in China. [ ]A. must B. might C. can D. should 查看答案