Construction equipment [6]

1. The stop valve is tightly closed , Attention shall be paid to large water flow resistance during installation , Prevent reverse installation .

A. correct
B. error

2. The advantages of a single pipe system do not include （）.

A. The system is simple , Save pipe materials
B. Low cost , Easy to install
C. The commissioning difference between the upper and lower rooms is small
D. The downstream type can carry out individual adjustment

3.（） It is composed of fuse and knife switch , It has the basic performance of fuse and knife switch , Used for overload and short circuit protection in distribution network .

A. Rubber cover knife switch
B. Disconnector switch
C. Combination switch
D. Fuse type knife switch

4.（） Not part of the cable TV system .

A. Signal source
B. user terminal
C. Signal transmission and distribution network
D. Back end systems

5. Medium efficiency filter is mainly used to filter particles with a size greater than 5.0 Micron medium particle dust .

A. correct
B. error

6. The artificial grounding wire can use the metal structure of the building .

A. correct
B. error

7. If the water supply pressure of outdoor water supply network is 200KPa, Domestic water pressure required by the building 240KPa, When the outdoor water supply can meet the requirements of indoor water consumption , But when it is difficult to set up a pool , A water storage tank shall be set 、 Water pump 、 The water tank works together to supply water .

A. correct
B. error

8. Emergency lighting generally adopts （）.

A. Fluorescent high pressure mercury lamp
B. Fluorescent lamp
C. Incandescent lamp
D. High pressure sodium lamp

9. Cast iron pipes can be bonded .

A. correct
B. error

10. The following belongs to the internal drainage system of the building （）.

A. Diversion system
B. Confluence system
C. Direct emission system
D. Filter discharge system

11. Gate valves shall not be used to regulate flow , Directional installation .

A. correct
B. error

12. intercom system 、 The maintenance regulations of anti-theft system are applicable to the host of the whole system 、 line 、 The time interval for checking the floor decoder is （）.

A. A year
B. Half a year
C. A month
D. A week

13. When the lift commissioning exceeds 50m When above , The weight of traction steel wire rope and traveling cable can no longer be ignored .

A. correct
B. error

14. There are ways to connect water supply pipes （）.

A. Threaded connection
B. welding
C. Socket connection
D. Flange connection

15. Leakage protector can be divided into （）.

A. Electromagnetic
B. Electronic type
C. Voltage type
D. Current type

16.《 Water law of the people's Republic of China 》 yes （） Laws and regulations on .

A. Environmental protection
B. fire
C. Energy saving
D. Architecture

17. If the water supply pressure of outdoor water supply network is 200KPa, Domestic water pressure required by the building 240KPa, When the outdoor water supply can meet the requirements of indoor water consumption , But when it is difficult to set up a pool , Should take （） Water supply mode .

A. Direct water supply
B. Set high-level water tank
C. Non negative pressure water supply device

18. Fixed assets refer to those with a service life of () The above , The unit value is above the specified standard , And maintain the original material form of assets in the process of use , Including houses and buildings , machinery equipment , Transportation equipment and tools, etc .

A. A year
B. Two years
C. Three years
D. Four years

19. By detecting the infrared light in the flame 、 Ultraviolet light is used to detect fire （） Fire detector .

A. photosensitive
B. Temperature sensing
C. Smoking
D. Combustible gas

20. Generally, the domestic water supply inlet pipe of public buildings is only provided with 2 strip .

A. correct
B. error

21. The purpose of vertical zoning in water supply system of high-rise buildings is （）.

A. Avoid damage caused by excessive pressure on the management of water supply system and equipment under the building
B. Avoid excessive pressure on the lower layer of the building , The sound of running water bath caused by excessive flow velocity in the pipeline , Vibration noise , Water hammer and water hammer noise
C. Avoid the splashing of water flow caused by excessive water head from the faucet in the lower water supply system
D. Avoid damage caused by excessive pressure on the management of water supply system and equipment on the upper layer of the building

22. The air conditioning system can be divided into... According to the setting of the equipment （）.

A. Centralized
B. Stand alone
C. Semi centralized
D. Hybrid

23. The basic composition of the air conditioning system is （）.

A. Cold and heat source system
B. Air handling
C. Energy transmission and distribution system
D. Automatic control system

24. Regular safety inspection is carried out in accordance with the provisions of the competent government departments , The safety inspection conducted by the elevator registration or Certification Engineer appointed by the relevant department or competent department in charge of elevator registration .

A. correct
B. error

25. The power load of civil buildings is divided into three levels . The following are secondary loads （）.

A. Interruption of power supply will cause personal injury and death
B. The interruption of power supply will have a significant political impact
C. Interruption of power supply will cause heavy economic losses
D. The place is in disorder

26. The diameter of seamless steel pipe adopts outer diameter ´ Wall thickness marking method .

A. correct
B. error

27. The connection modes of low-voltage distribution mainly include （）.

A. Radial
B. Straight line
C. Trunk
D. Hybrid

28. The water tank for drinking water shall be provided with a sealed box cover , The box cover shall be provided with access hole and vent pipe , The diameter of vent pipe is generally not less than 50mm; No valve shall be installed on the vent pipe , The nozzle shall be set downward , And the nozzle shall be equipped with （）.

A. barometer
B. Sealing device
C. Dust screen
D. Exhaust device

29. The water pressure of the outdoor water supply network periodically meets the water volume of the indoor pipe network 、 When required by water pressure , A water storage tank is adopted 、 Water pump 、 Water tank combined working water supply mode .

A. correct
B. error

30. If the normal lighting is interrupted for some reason , Lighting for continued work and evacuation is called （）.

A. Emergency lighting
B. Guard duty lighting
C. Obstacle lighting
D. Decorative lighting

31. The protection of closely connecting the uncharged metal part of electrical equipment under normal conditions with the zero line of power grid is （） Protect .

A. Connect to zero
B. Grounding
C. Electric leakage
D. A short circuit

32. Commonly known as 24V The following voltages are safety voltages .

A. correct
B. error

33. Hot water boiler , The temperature of hot water produced is higher than （） It is called high pressure boiler .

A.70℃
B.115℃
C.720℃
D.250℃

34. Indoor fire hydrants shall be arranged in obvious places in the building , among （） Should not be set .

A. In ordinary classrooms
B. stair case
C. Fire elevator front room
D. hall

35. China is used to treating elevator speed classification , Low speed ladder often refers to the speed of （）.

A. lower than 1.00m/s
B.1.00～2.00m/s
C. The speed is greater than 2.00m/s
D. At a faster rate than 20m/s

36. When the water inlet pipe and the water outlet pipe of the water tank are the same pipe , A check valve shall be installed on the outlet pipe at the bottom of the water tank .

A. correct
B. error

37. The power transformation and distribution substation of the building is composed of （） form .

A. Radiator chamber
B. High voltage distribution room
C. Transformer room
D. Low voltage distribution room

38.（） The radiators on each floor of the heating system are connected in parallel 、 On the return riser , The water passes through the return riser 、 The main pipe flows directly back to the boiler .

A. Double pipe upper supply and lower return type
B. Single pipe upper supply and lower return type
C. In the mechanical cycle, the supply type
D. two-wire

39. The outlet pipe shall be set at the lowest point of the water tank .

A. correct
B. error

40. The gas water heater can be directly installed in the bathroom .

A. correct
B. error

41. When the water inlet pipe and the water outlet pipe of the water tank are the same pipe , A plug valve shall be installed on the outlet pipe at the bottom of the water tank .

A. correct
B. error

42. Any kind of cable TV system , No matter how complicated , All by （） form .

A. front end
B. Signal transmission and distribution network
C. Router
D. user terminal

43. The high pressure boiler is made of （）.

A. Cast iron
B. steel
C. Cast iron and steel
D. aluminum

44. User terminal refers to the connector that supplies TV signals to the common antenna TV system , Also known as （）.

A. Front end system
B. User junction box
C. Terminal box
D. Signal source

45. It can collect the layer selection signal in the lift car and the external call signal of each layer , Automatically decide on , The control mode of sequential response in the next running direction belongs to （） The elevator .

A. press-button control
B. Signal control
C. Centralized selection control
D. Parallel control

46. Office automation system is abbreviated as （）.

A.FAS
B.CNS
C.OAS
D.SAS

47. The following are common lighting device failures （）.

A. A short circuit
B. Grounding
C. Open circuit
D. Electric leakage

48. The water inlet and outlet pipes share one pipe , A check valve shall be set on the short outlet pipe .

A. correct
B. error

49. The number of indoor fire hydrants exceeds 10 And the water consumption of fire hydrant is greater than 15L/S when , The inlet pipe of fire water supply shall not be less than （） strip , And arrange a layer of ring .

A.1
B.2
C.3
D.4

50. Once the elevator runs over speed or the pulling force of the traction steel rope decreases , Installed on the lift car （ Some are installed on the counter weight ） The safety gear of is started , Firmly clamp the lift car onto the guide rail , Avoid accidents .

A. correct
B. error

51. Power supply for high-rise buildings , Fire fighting electrical equipment , Emergency lighting , The fire elevator belongs to （）.

A. Class I load
B. Secondary load
C. Class III load
D. Class IV load

52. To prevent backflow of pipeline water , The valve to be installed on the pipeline is butterfly valve .

A. correct
B. error

53. The basic functions of the alarm controller do not include （）.

A. Received signal
B. The output signal
C. Monitor the working state of the system itself
D. Turn on and off the water flow in the pipe network

54. For the leakage protector for the purpose of preventing electric shock, it is advisable to choose （）.

A. Action time 0.1 second , Action current 30 Ma
B. Action time 0.1 second , Action current 15 Ma
C. Action time 0.5. second , Action current 30 Ma
D. Action time 0.5 second , Action current 30 Ma

55.（） The function of is to buffer and delay , Eliminate the false alarm of hydraulic alarm caused by water source pressure fluctuation .

A. transmission
B. Delay device
C. Turn on the device
D. Pressure regulating device

56. When a high-level water tank is set for water supply , To prevent the water in the water tank from flowing back to the outdoor pipe network , A butterfly valve is set at the inlet pipe entering the room

A. correct
B. error

57. The heating system consists of （） form .

A. heat source
B. Exhaust system
C. Thermal cycle system
D. Heat dissipation equipment

58. From the definition of property equipment and facilities management , The management of property equipment and facilities should be considered from the two elements of technical level and economic level as well as the relationship between them .

A. correct
B. error

59. The selection of pipes shall be based on the requirements of the transported medium （） And other factors to determine .

A. Water quality and water pressure
B. Water pressure and volume
C. Water quality and quantity
D. The water quality

60. Equipment maintenance management is mainly divided into fault repair and maintenance （） Two types of .

A. Technical training
B. Predictive maintenance
C. Operation monitoring management
D. Equipment renewal and transformation management

61.（） The utility model relates to a box facility specially used for containing certain fire water .

A. Fire hydrant
B. Fire water tank
C. Fire hose
D. Fire pool

62. The gate valve can be used to regulate the flow , There is no directionality during installation .

A. correct
B. error