The second point. According to the information of Baidu question bank, there is a multiple-choice question from the theoretical question bank of college sports volleyball at this time. The correct answer is that free volleyball players can't replace the players at No.2 on the field. Volleyball is a team sport, and its basic equipment includes a volleyball net and two teams with half-court. Its goal is to smash the ball to the opponent's court, so that it can't effectively counterattack the score.