Please list the definition of suspended animation from the following phenomena: (1) breathing, no heartbeat (2) no breathing (3) no breathing, heartbeat (4) no heartbeat (5) no other fatal trauma.

Answer: ②, ③, ④

2. When two first aid methods are used alternately, which alternate time is appropriate: (1)1min (2) 30s (3)10min (4) 3min (5)15s (6) 5min.

Answer: ④

3. When using two first aid methods alternately in 15s, please choose two of the following contents to form a group: (1) artificial respiration once (2) artificial respiration once (3) artificial respiration three times (4) chest compressions 10 times (5) chest compressions/kloc-0 times.

Answer: (3) and (5)

4. Rescue should be done immediately after the power is disconnected. Please point out that the following rescue locations are correct: (1) Move to a warm place for rescue; (2) move to a ventilated place for rescue; (3) On-site rescue.

A: (3)

5. When the electrocuted person falls from a height and has not landed, the emergency rescue measures are: (1) put a cushion on the falling place; (2) quickly support it with a tarpaulin; (3) face it quickly; (4) face it immediately and push it horizontally; (5) immediately support the protective net; And ...

A: (4)

6. Pick out the safety issues that should be paid attention to in the first aid of electric shock from the following contents: (1) Lay the person who gets an electric shock flat; (2) Prevent the person who gets an electric shock from getting another electric shock when disconnecting the power supply; (3) Unbutton the button of the person who gets an electric shock; (5) Pad the back of the person who gets an electric shock; (6) Rescue at the scene; (7) Break the mouth of the person who gets an electric shock; (8).

Answer: (2) (4) (6) (8) (10)

7. The artificial grounding body can be made of the following materials: (1) water pipe (2) aluminum stranded wire (3) multi-strand copper stranded wire (4) single-strand copper wire (5) steel bar (6) copper braided wire (7) flat iron (8) sheath line (9) steel-core aluminum stranded wire (1.

Answer: (3)(5)(7)

8. Conditions to be selected when installing the earth leakage protector: (1) Short-circuit current (2) Load current (3) Installation location (4) Protection action current (5) Protection action time (6) Power consumption system (7) Voltage level (8) Number of control poles (9) Protection line type.

Answer: (2)(4)(5)(8)

Third, fill in the blanks

1. Electrical accidents can be divided into personal accidents and equipment accidents.

2. The harm caused by current to human body can be divided into two categories: electric shock and electric injury.

3、? Electric shock? It is the current that directly passes through the human body, causing harm.

4、? Electric injury? It is the transformation of electric energy into other forms that can cause harm to human body.

5. Lightning strike can be divided into direct lightning strike and inductive lightning strike.

6. It is generally believed that 1mA current will get an electric shock when it passes through the human body.

7. It is generally believed that the power frequency current not exceeding 10mA will not lose the ability to get rid of it.

8, it is generally believed that more than 50mA of power frequency current through the human body, will cause ventricular fibrillation.

9. The forms of electric shock can be divided into direct electric shock, electric shock and accidental electric shock.

10. When the grounding device bears the current to the ground, the step voltage 20m away from the grounding device is approximately considered as zero.

1 1. The methods to avoid lightning damage include: installing lightning arresters on buildings and grounding them directly; For overhead lines that cannot be directly grounded, a lightning conductor can be added for grounding.

12, a lightning discharge, its current can reach hundreds to thousands of kA.

13, personal injury in electrical accidents can be divided into current injury, electromagnetic injury, electrostatic injury and lightning injury.

14, when looking for the grounding fault point, the staff should wear insulating boots.

15. Before inspection or testing, the equipment with residual charge can be discharged.

16, when the electric shock person's breathing and heartbeat stop, such as single rescue, artificial respiration and chest compressions should be performed alternately, once every 15s~20s.

17. The depth of adult chest compression is 3~5cm, and the number of compressions per minute is 60 ~ 80 times.

18, in a year, the months with more electric shock accidents are divided into June and September.

19, operations that have great harm to the safety of operators, others and equipment are called special operations.

20, for special operations personnel, must carry out professional safety technical training, after passing the examination, to allow their mount guard operation.

2 1, electrician's professional ethics is; (1) Final professional responsibility (2) Abide by professional discipline (3) Exchange electrician's professional skills and safe operation skills, (4) Unite and cooperate.

22, safe use of electricity, is to make all electrical equipment in good condition.

23. Electricity safety means that we should take all necessary measures to avoid personal electric shock accidents.

24, personal accidents and equipment accidents, mostly caused by illegal operation.

25. Using unqualified electrical products or materials on electrical equipment may cause serious consequences.

26. When the effective value of the power frequency current passing through the human body is about 1mA, there will be a feeling of electric shock, which is called perceived current.

27, if the electric shock has not been out of power supply, ambulance personnel can't directly contact the body, should try to make it out of power supply as soon as possible, and prevent the electric shock secondary injury.

28. The severity of electric shock is related to the voltage, path, frequency, time and human condition of current passing through human body.

29, the effective value of the power frequency current through the human body does not exceed 10mA, will not lose the ability to get rid of independently, this value means to get rid of the current.

When the effective value of current passing through human body reaches 500mA, it may cause ventricular fibrillation, which is the main cause of electric shock injury.

3 1, mouth-to-mouth (nose) artificial respiration, should make the head of the electric shock as close as possible, and export foreign bodies side by side.

32, artificial respiration operation, about every blowing 2S relax 3S, operation should be able to see the ups and downs of the electric shock chest.

Fourth, true or false:

1, the current passes through the human body, and there may be no feeling of electric shock. (? )

2, the current through the human body, there will be a feeling of electric shock. (? )

3, step voltage to get an electric shock, no risk of electric shock. (? )

4, step voltage to get an electric shock, there is also the danger of electric shock. (? )

5, residual electric shock, is also fatal. (? )

6, residual charge electric shock, no fatal danger. (? )

7. Static electricity is harmful. (? )

8, three-phase four-wire distribution system in the zero line, its potential to ground is sometimes not zero. (? )

9, more than half of the electric shock accidents, is caused by violation of operating procedures. (? )

10. For electrical equipment with large capacity, it should be discharged before operation after exiting operation. (? )

1 1. It is generally believed that the current below 1ma will pass through the human body without feeling of electric shock. (? )

12, the current passes through the human body, and the route from the left hand to the feet is the most dangerous. (? )

13. If you get an electric shock while maintaining the incandescent lamp, you can pull down the cable switch related to it to make it out of the power supply. (? )

14, electrical equipment accidents may also lead to secondary accidents. (? )

15, induced lightning strike, no fatal danger to people. (? )

16, electrostatic shock, no fatal danger to people. (? )

The values of 17 and safe voltage are artificially specified. (? )

18, electrostatic shock, no fatal danger to people. (? )

The value of 19 and safe voltage are artificially specified. (? )

20, insulating gloves and shoes in high and low voltage operation, can be used as basic insulation safety appliances. (? )

2 1, live working, direct contact with the zero line of single-phase circuit is not dangerous. (? )

22. The switch with obvious disconnection point of the control equipment has been turned on, and the current indicator light has been extinguished, which can be regarded as that the equipment has been cut off and maintenance is arranged. (? )

23, in live work, the human body and the grounding part should keep a safe distance. (? )

24, climbing, electrician with aluminum alloy ladder rubber pad for insulation. (? )

25, low voltage electroscope can be used to determine the type of power supply voltage. (? )

26, protective insulation refers to the insulation required to ensure the normal work of equipment. (? )

27, all equipment to strengthen insulation, can't grounding or zero line. (? )

28, regardless of whether the high voltage equipment insulation, shielding protection measures should be taken. (? )

29. Screen protectors include permanent screen protectors and temporary screen protectors. (? )

30, leakage protector according to the working principle is divided into residual current action type and current action type. (? )

3 1, the voltage leakage protector cannot prevent direct contact and electric shock. (? )

32. Under normal circumstances, the sum of primary current vectors is zero, and there is no induced current on the secondary coil of residual current transformer. (? )

33, current action type leakage protector does not need special grounding wire. (? )

34, current action type leakage protector can't prevent indirect contact to get an electric shock. (? )

35, choose the leakage protector only need to consider the influence of normal leakage current of electrical equipment on the leakage protector. (? )

36, leakage protection can replace the zero protection. (? )

37. In TN system or TT system, the working zero line of the load side of the leakage protector should be insulated from the ground. (? )

38. In TN system, repeated grounding can only be connected to the power supply side of leakage protector. (? )

39, leakage protection can be used as the only direct contact protection. (? )

40, leakage protection should be used in conjunction with other protective measures, in order to effectively prevent accidents such as electric shock. (? )

4 1. The release of static electricity is the only way to eliminate static electricity. (? )

42, flashover discharge along the solid surface is a kind of electrostatic discharge. (? )

43. Explosion and fire are the most serious hazards of static electricity. (? )

44, simply eliminate the electrostatic grounding on the conductor, the grounding resistance is 1000? Do it. (? )

45, when installing leakage protector, should distinguish between input and output, but don't have to distinguish between live and zero terminal. (? )

46, used in the leakage protector of important equipment, in order to reduce the power failure caused by misoperation, its action time is 0.22s ... )

47, fire and explosion sometimes occur separately, sometimes both occur at the same time. (? )

48. The higher the flash point of liquid, the greater the risk of fire and explosion. (? )

49, electrical fire after cutting off the power supply, should use electrical fire extinguishing equipment. (? )

50. The lower the ignition temperature of materials, the greater the risk of fire and explosion. (? )

5 1. The fire hazard environment is divided into 2 1, 22 and 23 zones. (? )

52. Combustible substances, combustion-supporting substances and fire coexist and interact with each other, which will cause combustion. (? )

53, combustible materials can burn after contact with the fire source, after removing the fire source, can still continue to burn as a fire source. (? )

54, after the fire, the key to fire fighting is to ensure the supply of combustible materials and combustion-supporting materials. (? )

55. Water and dry sand can be used for electric fire fighting. (? )

56, fire, explosion dangerous environment of electrical equipment metal pipes, should be allowed as a protective grounding or protective zero line. (? )

57. Metal pipes of electrical equipment in fire and explosion dangerous environment must be protected and connected to zero. (? )

58. Foam extinguishing agents can be used for electric fire fighting. (? )

59. Air and oxygen are combustion-supporting substances in electrical fires. (? )

60, electrical equipment, electrical fire may still be charged. (? )

6 1, electrical fire, electrical equipment insulation damage, and earth electrification may produce dangerous step voltage and contact voltage. (? )

62. For electrical equipment in fire and explosion hazardous environment, general electric products can be selected. (? )

63, fire electrical products, suitable for fire dangerous places. (? )

64. The junction box of electrical equipment in explosive dangerous environment should be explosion-proof or flame-proof. (? )

65, fire, explosion dangerous environment of wooden switchboard, regardless of the current size, should be wrapped in iron. (? )

66, cut off the power supply, different phase lines should be in different positions, and cut off in stages. (? )

67. Flammable and explosive gas and liquid pipelines are not allowed as natural grounding bodies. (? )