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Which of the following models is Huawei's room-level water-cooled air conditioner?
Which of the following models is Huawei's room-level water-cooled air conditioner?A . NetCol8000-E220B . NetCol5000-C065C . NetCol5000-A042D . NetCol8000-C070View AnswerAnswer: D
Which of the following belongs to air-cooled row-level air conditioner?
Which of the following belongs to air-cooled row-level air conditioner?A . NETCOL5000-AB . No other optionsView AnswerAnswer: A
In the power supply and distribution system of the data center, if a power outage occurs, the backup switching between AC power and AC power or between AC power and diesel generator is generally completed by ().
In the power supply and distribution system of the data center, if a power outage occurs, the backup switching between AC power and AC power or between AC power and diesel generator is generally completed by ().A . Automatic transfer switch systemB . Diesel generator systemC . Low voltage power...
What is the English abbreviation for sealed valve-regulated lead-acid battery?
What is the English abbreviation for sealed valve-regulated lead-acid battery?A . VRLAB . GELC . AGMD . GFWView AnswerAnswer: A
Which of the following descriptions about data center monitoring systems is wrong?
Which of the following descriptions about data center monitoring systems is wrong?A . Can monitor power system, environmental system, fire protection system, etc.B . Remote monitoring is not supportedC . Can provide multiple alarm methods such as voice and short messageD . Intelligent monitoring system can improve management efficiencyView AnswerAnswer:...
Which of the following components does not belong to the smoke exhaust system in the fire protection system?
Which of the following components does not belong to the smoke exhaust system in the fire protection system?A . Pressurized blowerB . Smoke ExhaustC . Air ductD . Air sampling tubeView AnswerAnswer: D
Which of the following descriptions about electrical equipment safety is wrong?
Which of the following descriptions about electrical equipment safety is wrong?A . The metal casing of electrical equipment must be grounded (zeroed) for protectionB . Electrical equipment should be corrosion-resistant and moisture-proofC . When a fire occurs in electrical equipment, water can be used to extinguish the fire.D . It...
Which of the following statements about condensers is wrong?
Which of the following statements about condensers is wrong?A . Under normal circumstances, the inlet temperature of the condenser in an air-cooled direct expansion air conditioner is higher than the outdoor temperature.B . Condensers can be divided into air-cooled condensers and water-cooled condensers.C . Condensation water will be generated when...
The active power is 80 kW, the power factor is 0.8, the system rated voltage is 380 V, 50 Hz, what is the current when the equipment is running at full power?
The active power is 80 kW, the power factor is 0.8, the system rated voltage is 380 V, 50 Hz, what is the current when the equipment is running at full power?A . 122 AB . 152 AC . 210 AD . 263 AView AnswerAnswer: B
In a circuit with resistance and capacitance, if the frequency of the current increases from 50 Hz to 100 Hz, how will the impedance of the circuit change?
In a circuit with resistance and capacitance, if the frequency of the current increases from 50 Hz to 100 Hz, how will the impedance of the circuit change?A . IncreaseB . ReduceC . No changeD . UncertainView AnswerAnswer: B
