How do college entrance examination instruments pass through the security gate?

Just go through directly and explain to the inspector.

According to Article 37 of the "Unified Examination Management Rules for General College Admissions": Candidates must abide by the following disciplines: when entering the examination room, they can only bring necessary pens, ballpoint pens, pencils, rulers, Compasses, set squares, erasers, slide rules, calculators, school bags, materials, etc. are not allowed.

You can only fill in your name and test number in the places specified in the test paper, and you are not allowed to make any other marks on the test paper. Answering questions can only begin after the test start signal is sent. Only blue and black ink (refill) pens can be used to answer questions, and pencils can be used for drawings.

Extended information

There are three main categories of metal detectors: electromagnetic induction type, X-ray detection type, and microwave detection type. They are electronic instruments used to detect metal and can be used in many applications. fields.

(1) In the military, metal detectors can be used to detect metal mines;

(2) In the security field, they can detect weapons and crime tools carried or hidden;

(3) In archeology, ancient tombs with buried metal objects can be detected, and gold, silver, jewelry or other metal products in the ancient tombs can be found;

(4) During the project , can be used to detect underground metal buried objects, such as pipes, pipelines, etc.;

(5) In mineral exploration, it can be used to detect and discover natural gold particles;

(6) Industry It can be used for online monitoring, such as removing cotton, coal, metal debris in food, etc.

China.com--Guangdong College Entrance Examination Hall bans opaque water cups for the first time, leaving no dead ends for metal detection

Baidu Encyclopedia--Metal Detector