[单选题]
05.17: A small positive test charge is placed at point P in the r+x ebi w-lp/ppfs()6f hy5uw 5egxyjktxp.uq4yc:k3loh1v cf8n)mh*c-u +a, -ion near two charges. Which of the foll)--,h+jk1:vh4k8y3 cl.amncqyxpo xu c tf *u owing arrows indicates the direction of the force on the positive test charge?
