一、选择题1.法拉第首先提出用电场线形象生动地描绘电场。图 1为点电行a、b所形成电场的电场线分布图,以下几种说法正确的是A.a、b为异种电荷,a带电量大于b带电量B.a、b为异种电荷,a带电量小于b带电量C.a、b为同种电荷,a带电量大于b带电量D.a、b为同种电荷,a带电量小于b带 1. Multiple-choice questions 1. Faraday first proposed vividly depicting electric fields with electric field lines. Figure 1 shows the distribution of the electric field lines formed by the electric fields a and b. The following statements are correct: Aa and b are different types of charges; a charge is greater than the b charge; Ba and b are different charge; a charge is less than b Charge amount Ca and b are the same kind of charge, a charge quantity is greater than b charge quantity Da, b is the same kind of charge, a charge quantity is smaller than b band