如图所示仅在电场力作用下一带电粒子沿图中虚线从a运动到b则 A.电场力对粒子做正功b.粒子的动能减�c.该粒子带负电d.粒子的 Template




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tomski如图所示仅在电场力作用下一带电粒子沿图中虚线从a运动到b则 a.电场力对粒子做正功b.粒子的动能减�c.该粒子带负电d.粒子的 coloring