益阳市赫山区于日前举行了一次三方单打门球赛。这次比赛,27支代表队每队推选一名技战术水平较高的队员,每场比赛甲、乙、丙三名运动员依抽签,按一、二、三号排定,每人各打三个球,即一号队员击打①、④、⑦球,二号队员击打②、⑤、⑧球,三号队员击打③、⑥、⑨号球,⑩球不要。各方仍按①、②、③……的顺序击球,运动员自兼指挥员。比赛采用单循环制进行,先分三组预赛,每组取前三名 Heshan District, Yiyang City, held a three-way singles match at a few days ago. The competition, 27 teams each team selected a higher level of technical and tactical team members, each game A, B, C three athletes by lottery, according to the first, second and third schedule, each playing three A ball, that is, a player hit the ①, ④, ⑦ ball, team 2 hit ②, ⑤, ⑧ ball, team 3 hit ③, ⑥, ⑨ ball, ⑩ ball do not. All parties still hit ①, ②, ③ ... ... the order of hitters, athletes since the commander. Competition using single-cycle system, the first three groups preliminaries, each taking the top three