Huawei H12-421 Actual Free Exam Questions & Community Discussion
The main reason for the energy-saving effect of the closed cold/hot passage is (). (Multiple choice)
Correct Answer: A,B,C,D
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In the stable operation of the NeCol5000-A35kW air conditioner compressor, the oil level observed by the oil sight is regarded as qualified at the ( ) position.
Correct Answer: C
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ECC800 is the core component of the micro-module local management, and its south-facing components can be extended through the PoE bus.
Correct Answer: A
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What does the gas fire extinguishing system startup principle include? (Multiple choice)
Correct Answer: A,C,D
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The refrigerant air cylinder of the Huawei air-cooled air conditioner does not need to be inverted on the electronic scale when charging the refrigerant.
Correct Answer: B
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Before the battery is installed, a single battery open circuit voltage is required: 12V battery is greater than or equal to 12.60V or 2V battery is greater than or equal to 2.10V. When it is found to be unqualified, the battery needs to be recharged.
Correct Answer: A
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When the differential pressure switch of the air filter of the indoor unit is closed, it indicates that the filter is too dusty and should be disposed of in time.
Correct Answer: A
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Which of the following is not part of the NetCol 5000-C30kW precision air conditioner.
Correct Answer: A
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Which of the following is the correct procedure for powering up the UPS5000?
Correct Answer: B
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To use the NetEco APP on PAD to query the PUE information of the current computer room, you need to click the () menu.
Correct Answer: D
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The UPS2000-G-(6-20kVA) did not report a fault but the load was cut off due to a poor connection of the output cable.
Correct Answer: A
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