n.监考人;监考;监视器
If you have a problem, ask the invigilator. 有问题就问监考人。
The candidate must be subject to the invigilator's supervision and can not disturb the invigilator's work in any way. 考生必须服从监考人员管理,不得以任何形式干扰监考人员正常工作。