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1. (Multiple choice question) What are the following types of security inspection equipment commonly used in our daily lives?
A
Handheld security device
B
Security gate
C
Cabinet-type security door
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Answer: ABC. In daily life, there are three main types of security inspection equipment that we come into contact with when passing through security inspection: handheld security inspection instrument, security inspection door, and cabinet security inspection machine.
2. (Multiple choice) What is the difference between the radiation of the security screening machine and the radiation of the chest X-ray taken by the hospital?
The security machine only needs to show the rough outline of the object
Hospital filming requires exquisite detail
The amount of radiation at the security screening machine is much lower than that of medical examinations
Answer: ABC. The X-ray of the security machine needs to distinguish the material of the items in the luggage by different colors on the display, only to show the general outline of the object, and does not require exquisite details. Therefore, the radiation of the security screening machine is much lower than the radiation of the medical examination.
3. (Multiple choice questions) Although the radiation of security inspection is small, the following points still need to be paid attention to when using:
Bear children through the security check, parents should be optimistic
Do not put your hand into the lead curtain, and do not open the lead curtain
Do not stay too long at the entrance of the security equipment channel
Answer: ABC. Children have passed the security check, parents must be optimistic. Prevent drilling into the security equipment, do not put your hand into the lead curtain, and do not open the lead curtain to look inward. Pick up your luggage at the exit of the security equipment and leave quickly, do not stay too long at the entrance of the security equipment channel.
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Author: Ma Li, Center for Disease Control and Prevention, Huzhou City, Zhejiang Province
Review: Expert of the National Health Science Popularization Expert Database
Chinese Center for Disease Control and Prevention Radiation Protection and Nuclear Safety
Sun Quanfu, a researcher at the Institute of Medicine
Planner: Tan Jia Yu Yunxi
Editor: Luan Zhaolin