如图所示,A、B、C为一等边三角形的三个顶点,某匀强电场的电场线平行于该三角形平面,现将电荷量为10﹣8C的正点电荷从A点移到B点,电场力做功为3×l0﹣6J,将另一电荷量为10﹣8C的负点电荷从A点移到C点,克服电场力做功3×10﹣6J. (1)求电场线的方向及UAB、UAC、UBC的值; (2)若AB边长为cm,求电场强度的大小.
Betty's parents are away for the week, so I think I'd go over to keep her ________.
[ ]
A.company
B.firm
C.absence
D.favor