12.如图在点电荷q产生的电场中虚线表示等势面实线表示质子穿过电场时的轨迹ab为轨迹与两等势面的交点则下列说法正确的是 A.q可能是 Template




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tomski12.如图在点电荷q产生的电场中虚线表示等势面实线表示质子穿过电场时的轨迹ab为轨迹与两等势面的交点则下列说法正确的是 a.q可能是 coloring