QUESTION 64
MCB Circuit breaker CThe setting value of level tripping is in ____________, used in ITLoad occasions.

QUESTION 65
Lay anti-static floor, wear anti-static shoes and socks to prevent it from forming ____________ .

QUESTION 66
The three major indicators of air conditioning are ____________ .

QUESTION 67
When the AC power equipment is introduced in the three-phase four-wire system, in addition to the grounding of the near end of the power transformer, the near end of the electrical equipment and the equipment room should be grounded repeatedly on the neutral line.

QUESTION 68
MCB Circuit breakers can be divided into ____________ and (magnetic trip) according to the principle of tripping.

QUESTION 69
____________ Yes upsThe unit of rated capacity.

QUESTION 70
____________ The main function is electric energy distribution, which distributes the front-end electric energy to various types of electrical equipment according to requirements, standards and specifications, such as ups, Air conditioning, lighting system, etc.

QUESTION 71
Gas fire-fighting system refers to a fire-extinguishing system that uses gas ____________ as the fire extinguishing medium. ____________ .

QUESTION 72
The fuse can protect personal safety when the equipment leaks.

QUESTION 73
UPS It can purify the mains input, output stable AC, and protect the load.

QUESTION 74
The air-conditioning energy efficiency ratio is the ratio of the effective input power to the cooling capacity, and its value is W/W Express.

QUESTION 75
RER It is used to measure the use of renewable energy in the data center to promote the regeneration of solar, wind, and water energy, and the use of energy with no carbon emissions or very little carbon emissions.

QUESTION 76
The following Does the model of air conditioner have an oil separator?

QUESTION 77
The following components that can improve the heat exchange capacity of the heat exchanger are
____________ .

QUESTION 78
Which of the following descriptions about the air supply method from top to bottom is correct ____________ .

QUESTION 79
The function of the following ____________ components is to help return oil.

QUESTION 80
Huawei Monitoring System NETECO Support hierarchical network management function.

QUESTION 81
International Electrotechnical Commission ____________. The specified contact voltage limit is
____________V, And stipulate 25V. The following does not need to consider the prevention Safety measures to prevent electric shock.

QUESTION 82
There are three different classifications of grounding forms in low-voltage power distribution systems
____________, where the first capital letter represents ____________ .

QUESTION 83
The basic principle of the rotary dehumidifier is that the water vapor encounters the condensation water droplets of the cooling tube fins to dehumidify.

QUESTION 84
When the battery electrolyte leaks, ____________ treatment is more appropriate.