执行前款规定的检定、测试任务的人员，必须经考核合格。
The personnel carrying out the tasks of verification and testing mentioned in the preceding paragraph must be tested for their qualifications.
必须对操作工进行知识和技能的培训，经考核合格持证上岗。
To improve knowledge and skills, the operators must be provided with necessary training.
必须对操作工进行知识和技能的培训，经考核合格持证上岗。
To improve knowledge and skills, the operators must be provided with necessary training. Only those holding qualification certificates are allowed to work on relevant posts.
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