Is the invigilator of the postgraduate entrance examination the same in every course?

The invigilator of the postgraduate entrance examination is different in each course. The invigilator of the postgraduate exam will implement a temporary lottery system, and the invigilator will be replaced after an exam. The national unified entrance examination for graduate students refers to the general name of the relevant examinations organized by the education authorities and enrollment institutions for the selection of graduate students, which consists of the initial examination and re-examination organized by the national examination authorities and enrollment units. It is a selective examination, and the type of academic qualifications admitted is general higher education.