题型:问答题 简答题 如图13-7-5所示,四条竖直线是一个匀强电场中的四个等势面,相邻两个等势面之间的距离为2 cm,由此可以确定场强的大小和方向是( )图13-7-5A.100 V/m,竖直向下B.100 V/m,水平向左C.200 V/m,水平向左D.200 V/m,水平向右 查看答案
题型:问答题 简答题 —Why didn't you go shopping with them? —Because my son is so young that he can't dress ______.A. him B. him clothes C. himselfD. his 查看答案