最新なHuawei H12-421問題集（240題）、真実試験の問題を全部にカバー！

質問 1：
The refrigerant air cylinder of Huawei air-cooled air conditioner does not need to be inverted on the electronic scale when charging the refrigerant.
A. False
B. True
正解：A

質問 2：
What is the control component of the modular data center closed access door?
A. Cabinet collector
B. sunroof actuator
C. Multi-function sensor
D. Access control actuator
正解：D

質問 3：
The following air conditioning systems need to be equipped with a cooling tower or dry cooler ().
A. Direct ventilation air conditioning system
B. CW air-cooled type
C. DX air-cooled type
D. DX water-cooled type
正解：D

質問 4：
NeCol5000-C nitrogen filling pressure value is (); holding time is ().
A. 0.8MPa; 24h
B. 1.0MPa; 24h
C. 0.8MPa; 12h
D. 1.0MPa; 12h
正解：A

質問 5：
What is the correct statement about the description of UPS5000-E? (Multiple choice)
A. Modular design
B. The main input frequency range is 40-70HZ
C. The main input voltage range is 138V-485V
D. Support for the maximum number of parallel units is 2
正解：A,B,C

質問 6：
Which interface is not on the smart ETH socket?
A. AI/DI
B. PWR_IN power cascade interface
C. PWR_OUT power cascade interface
D. PoE
正解：A

質問 7：
The alarm management functions supported by the ECC800 are (). (Multiple choice)
A. Alarm data export
B. Filtering alarms
C. Alarm parameter setting
D. View historical alarms
正解：A,B,C,D

質問 8：
When connecting the refrigerant pipe, to prevent the pipe from being oxidized, it is necessary to introduce a small amount of nitrogen gas during welding.
A. False
B. True
正解：B

質問 9：
What are the working mode of the runner natural cooling scheme? (Multiple choice)
A. Mixed mode
B. Complete compressor cooling mode
C. Complete natural cooling mode
D. Direct ventilation mode
正解：A,B,C