带电粒子只在电场力作用下从a点运动到b点轨迹如右图虚线所示则 A.该粒子可能带正电b.该粒子电势能不断减�c.该粒子动能不断增加d Template




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tomski带电粒子只在电场力作用下从a点运动到b点轨迹如右图虚线所示则 a.该粒子可能带正电b.该粒子电势能不断减�c.该粒子动能不断增加d coloring