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Which of the following statements about batteries is wrong?
Which of the following statements about batteries is wrong?A . The battery room must be protected from overheating and thermal runaway.B . The battery expands because too much gas is released, causing the pressure to increase.C . When the battery reaches the end of its service life, no special treatment...
Which of the following functions can display the entry and exit records of data center personnel?
Which of the following functions can display the entry and exit records of data center personnel?A . Configuration ManagementB . Access Control ManagementC . Energy Efficiency ManagementD . Work Order ManagementView AnswerAnswer: B
Which of the following statements about battery packs in UPS systems is wrong?
Which of the following statements about battery packs in UPS systems is wrong?A . When the AC power input is normal, the AC power will charge the battery pack.B . Batteries are an important part of data center infrastructure and can provide power to back-end loads in the event of...
What is the requirement for the duration of a single fault in a Class II power grid?
What is the requirement for the duration of a single fault in a Class II power grid?A . ≤8 hoursB . ≤4 hoursC . ≤0.5 hD . ≤6 hoursView AnswerAnswer: D
According to Heinrich 's Law, in a machinery accident, which of the following is the proportion of casualties (serious injuries or deaths), minor injuries, and unsafe behaviors?
According to Heinrich 's Law, in a machinery accident, which of the following is the proportion of casualties (serious injuries or deaths), minor injuries, and unsafe behaviors?A . 1:10:100B . 1:50:200C . 1:35:400D . 1:29:300View AnswerAnswer: D
Which of the following does not belong to the components of chilled water air conditioner?
Which of the following does not belong to the components of chilled water air conditioner?A . Condensing agentB . NoneView AnswerAnswer: A
Which of the following is not one of the four major components of an air-cooled air conditioner?
Which of the following is not one of the four major components of an air-cooled air conditioner?A . CompressorB . EvaporatorC . FanD . CondenserView AnswerAnswer: C
In an air conditioning system, which of the following uses water cooling or air cooling to cool the high-temperature and high-pressure gas discharged from the compressor and release the heat to the outside?
In an air conditioning system, which of the following uses water cooling or air cooling to cool the high-temperature and high-pressure gas discharged from the compressor and release the heat to the outside?A . EvaporatorB . CondenserC . CompressorD . Expansion valveView AnswerAnswer: B
Which of the following outdoor unit models has a dual fan?
Which of the following outdoor unit models has a dual fan?A . NETCOL500-A072B . No other optionsView AnswerAnswer: A
Which of the following is the temperature of the cold channel air inlet area of the data center specified in GB50174-2017?
Which of the following is the temperature of the cold channel air inlet area of the data center specified in GB50174-2017?A . 11 ℃ ~19 ℃B . 13 ℃ ~22 ℃C . 18 ℃ ~27 ℃D . 20 ℃ ~35 ℃View AnswerAnswer: C
