空间有一均匀强电场,在电场中建立如图所示的直角坐标系O﹣xyz,M、N、P为电场中的三个点,M点的坐标(0,a,0),N点的坐标为(a,0,0),P点的坐标为(a,,).已知电场方向平行于直线MN,M点电势为0,N点电势为1V,则P点的电势为( ) 17、---- Excuse me, Dad, but I am going to the club to
meet my friends in the football team.
---- OK._________.
A.Good luck
B.Congratulations
C.With pleasure
D.Have fun