如图所示,a、b、c是一条电场线上的三点,电场线的方向由a到c,a、b间距离等于b、c间距离,用φa、φb、φc和Ea、Eb、Ec分别表示abc三点的电势和场强,可以判定( ) A.φa>φb>φc; B.Ea>Eb>Ec C.φa-φb=φb-φc; D.Ea=Eb=Ec 答案:AWith _______ production up 60%, the car company had another excellent year. A. ordinary B. annual C. common D. usual