某电场的电场线的分布如图所示一个带电粒子只在电场力作用下由m点沿图中虚线所示的路径运动通过n点则下列判断正确的是 A.粒子带正电 b.粒子 Template




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tomski某电场的电场线的分布如图所示一个带电粒子只在电场力作用下由m点沿图中虚线所示的路径运动通过n点则下列判断正确的是 a.粒子带正电 b.粒子 coloring