What is the current situation of property management in China? (Does it include "problems in property management"? )

1. The basic contents of property equipment management include (management) and (service).

2. According to the professional nature, the equipment management department can be divided into four groups, namely, high-voltage group, HVAC group, (low-voltage and elevator group) and maintenance group.

3. The person who is fully responsible for managing, operating, maintaining and maintaining the property equipment and ensuring the normal operation of the equipment is the post responsibility of the (engineering manager).

4. The building water supply pipeline leads to the indoor water source and water distribution facilities, which is called the indoor water supply part. Water supply systems can be divided into three categories according to their uses: (domestic water supply system), (production water supply system) and (fire water supply system).

5. The connection modes of water supply pipeline are (threaded connection), also known as threaded connection, welding, socket connection and (flange connection).

6. The water meter is an instrument for measuring the cumulative water consumption of users. At present, water meters are widely used in indoor water supply systems.

7. The indoor water supply system is mainly composed of (water inlet pipe), (water meter node), water supply pipeline, water supply fittings, booster, water storage equipment and indoor fire fighting equipment.

8. When the water pressure of the outdoor water supply network is lower or periodically lower than that required by the water supply network inside the building, and the water consumption inside the building is uneven, it is appropriate to adopt the water supply method of setting up (boosting) equipment.

9. The drinking water tank should be equipped with a sealed box cover with manhole and exhaust pipe. No valve shall be bumped on the snorkel, and the nozzle shall be set downwards, and the nozzle (dust screen) shall be installed. The diameter of the snorkel is generally not less than 50 mm.

10. The drainage system in the building can be divided into three categories: (domestic drainage system), (industrial wastewater drainage system) and (roof rainwater drainage system).

1 1. The drainage system in the building can be divided into two types: (subsystem) and (combined system).

12. Water and gas flow in the drainage pipe inside the building. The function of the ventilation pipe is to discharge the toxic and harmful gas discharged from the drainage pipe into the atmosphere above the roof.

13. Left-handed urinals can be divided into (flushing type) and (siphon type) according to the hydraulic principle of flushing.

14. If the residential area adopts the separate drainage system, it should be divided into (rainwater pipeline system) and sewage pipeline system according to the different functions of the drainage pipeline.

15. The water supply and drainage pipeline system in residential quarters consists of (household connecting pipe), (branch pipe of residential quarters) and (main pipe of residential quarters).

16. If the residential area adopts the separate drainage system, it should be divided into (sewage pipeline system) and rainwater pipeline system according to the different functions of the drainage pipeline. 17. The burning process of building fire can be divided into three stages: (smoldering), (deflagration) and (extinguishing).

18, the height dividing line between super high-rise buildings and high-rise buildings is (100) m.

19, automatic sprinkler system is a kind of fire water supply equipment that can automatically spray fire and send out (fire alarm signal) in case of fire.

20. The fire hydrant is a spherical valve faucet with a button interface inside, with one end connected (fire riser) and the other end connected (hose).

2 1, automatic sprinkler system can be divided into open automatic sprinkler system and closed automatic sprinkler system according to the opening and closing form of nozzle.

22. The heating system consists of three main parts: (heat source), (thermal circulation system) and (cooling equipment).

23. Heating system management includes heat source management, (heating pipe network management) and (user management).

24. The radiator is a heat load device in the heating system, which is responsible for transferring the heat carried by (hot coal) hot water or steam to (indoor air) to achieve the purpose of heating.

25, ventilation system according to the role of power, can be divided into (natural ventilation), (mechanical ventilation).

26. Maintenance of ventilation and smoke control system mainly includes four aspects: (dust removal), (patrol inspection), (instrument calibration) and system maintenance.

27, take mechanical pressure air supply way, with the gas flow and pressure difference generated by the fan to control the flow direction of the pharynx smoke prevention technology is (mechanical smoke prevention).

28, mainly rely on the natural wind pressure caused by indoor wind and hot pressing caused by indoor and outdoor air temperature difference to force the air to flow, thus changing the indoor air environment ventilation mode is (natural ventilation).

29. The enthalpy in the air refers to the (total heat) contained in the air.

30. The methods of air humidification can be divided into two categories: one is to humidify the air by mixing steam, that is, steam humidification; One is to humidify the air because water absorbs sensible heat in the air, that is, (water evaporation heating)

3 1. The smoke exhaust mode driven by wind pressure and hot pressing is (natural smoke exhaust).

32. Fire prevention and smoke prevention equipment and components mainly include (fire damper), smoke exhaust valve and (smoke exhaust fan).

33. The basic composition of air conditioning system consists of four subsystems: cold and heat source system, (air treatment), (energy transmission and distribution system) and automatic control system.

34, air conditioning, is through the use of certain technical means, in a specific space, to adjust and control (air environment), to achieve and maintain in a certain range, in order to meet the requirements of technological process and human comfort.

35. The refrigeration system consists of three subsystems (refrigeration device), chilled water pipeline and cooler pipeline).

36. Air conditioning systems can be divided into three types (centralized), (independent) and semi-centralized according to equipment settings.

37. The power system consists of power generation system, (power grid) system and (user) system.

38. The frequency standard of China power grid is (2,50) Hz.

39. Low-voltage distribution mode refers to the connection mode of low-voltage trunk lines. Low-voltage distribution generally adopts 380/220V neutral point direct grounding system. There are three main connection modes of low-voltage distribution: radial, trunk and hybrid.

40. (Substation (room)) is the hub of residential power supply and distribution system, and is responsible for receiving, transforming and distributing electric energy.

4 1. Substation consists of three parts: high voltage substation, (transformer) and (low voltage substation).

42, (automatic air switch), also known as automatic air switch, is a kind of protection circuit that automatically cuts off line faults.

43, leakage protector can be divided into electromagnetic and (electronic) two kinds, electromagnetic protector has good reliability, general action current is not more than 30mA.

44, leakage protector can be divided into electromagnetic and electronic two kinds, (electromagnetic) protector has good reliability, general action current is not more than (30mA).

45, it is generally said that the voltage below (36)V is safe voltage.