A, collision B, exposure C, dielectric corrosion D, baking
4. What are the hazards if combustible velvet dust is not cleaned in time? (ABC)
A, explosion when mixed with air b, friction fire at high temperature c, fire spread d, harm to human respiratory system.
5, the use of mobile power should pay attention to the problem, the correct statement is (ABD)
A, mobile power supply in the process of use or put on hold, should avoid contact with heavy objects or sharp metal parts.
B. When charging the mobile device, if it is found that the mobile device is hot, stop charging immediately.
C when the temperature of mobile power supply rises abnormally, it should be cooled immediately, and always pay attention to the temperature change.
D during daily use, contact between the input and output ports of the mobile power supply and metal parts such as buttons should be avoided.
6. What are the common ways of stealing apartments for single employees (ABCD)?
A, shoplifting B, theft C, burglary D through the window, stealing keys.
7, do a good job in the safety work of single employee apartment need to pay attention to the problem, the correct statement is (ABD).
A, you can't just be with outsiders.
B, the last person to leave the dormitory should pay attention to close the window and lock the door.
C. When sleeping, put your mobile phone and wallet beside the pillow.
D, pay attention to keep your keys, and don't lend them to others casually.
8. What are the dangers for employees to put their mobile phones on the platform at will? (ABC)
First, it is easy to be stolen by others
B, easy to be knocked down and fall into the car platform, resulting in damage to equipment and mobile phones.
C, easy to be stolen by others.
D, it will cause electromagnetic interference to the equipment.
9. What requirements (ABCD) should elevator passengers follow when using the elevator correctly?
A, comply with the elevator safety precautions and warning signs.
Don't open the elevator landing door by unsafe means.
C. the elevator and its ancillary facilities shall not be dismantled or destroyed.
D, don't take the elevator that exceeds the rated load.
10. Why should all new employees receive safety training and education? The following statement is true (ABCD).
A, establish safety awareness b, know safety knowledge c, master safety skills d, obey the rules and discipline.
1 1, and the following belong to special equipment (ABC)
A, boiler b, elevator c, crane d, carpet loom
12. Why should I lock the doors and windows when there is no one working in the off-duty and holidays (ABC) workshop?
A, prevent the company's idle personnel from entering the workshop at will to operate electrical equipment and facilities.
B, prevent illegal personnel from entering the workshop to steal property.
C, prevent the accessories, materials and tools in the workshop from being used by other department personnel without supervision.
D, prevent vehicles from being parked in the workshop.
13. What should I do if the gas leaks at home? The following statement is true (BCD).
A. Call the gas rescue immediately. B. close the main natural gas valve. C, quickly open the doors and windows d, quickly evacuate.
14, four things to do before leaving the office after work, the following statement is true (ABCD)
A, cut off the indoor main power supply or unplug the power plug.
B, check whether the door lock is in good condition at work every day.
C, check and close the window, lock the office door.
Important materials, cash, official seals and small valuables are stored or safely kept.
15. Why should a protective cover be installed in the cable trench? The following statement is true (ABD).
A, to prevent people from accidentally falling into the cable trench.
B, prevent vehicles from falling into the cable trench.
C, prevent sundry, dust into the cable trench.
D, prevent rats from entering the cable trench and biting the cable.