You can't. The main reason why the pre-job training of judicial appraisers can't be tested in advance is that the content and time arrangement of the training are carefully designed and planned, aiming at ensuring that the knowledge and skills of judicial appraisers reach a certain level, they can be competent in judicial appraisal work and ensure the accuracy and fairness of judicial appraisal. If the examination is conducted in advance, it will lead to problems such as insufficient training, unskilled skills and insufficient knowledge, thus affecting the quality and credibility of judicial expertise.