About barcodes: generally, only subjects that need to be labeled with barcodes are national unified examination subjects; There are two kinds of bar codes, candidate information code and test paper information code, both of which should be posted, so don't miss it; Barcodes are generally affixed to the designated positions on the answer sheets, and several answer sheets should be affixed with several barcodes.
About sealed bags: the subjects that need candidates to unpack and pack sealed bags are generally only professional subjects, and the subjects of the national unified examination are unpacked, distributed, collected and sealed by invigilators; Be careful when opening the sealed bag.
Extended data
Examination room rules
Candidates are not allowed to talk to each other and pass on stationery and supplies in the examination room. So if you find that you have lost important stationery, you can raise your hand and ask the invigilator. Don't talk to other candidates, otherwise it may be treated as cheating.
It should be noted that candidates can only start answering questions after the opening signal is issued; After the end of the exam signal is issued, candidates should immediately stop answering questions and writing. Drawing lots or delaying exams is likely to be regarded as cheating.