1, 30 balls are continuously and alternately supplied to the forehand and backhand positions of candidates by the table tennis server at a fixed point, and the frequency is 40 balls (1)/ minute; 2. Each candidate plays 30 shots in a row and only takes one test. 3。 Candidates who make mistakes due to server reasons are allowed to retake the exam. (Interpretation: This is more important. A stable service can reduce the emotional fluctuation of candidates and give them more fair examination opportunities. There are two factors that affect the stability of serving. The first is the quality of the ball, and the second is the stability of the server.