H12-421-ENU練習問題集で検証済みで更新された240問題あります
更新されたH12-421-ENU試験問題集でPDF問題とテストエンジン
質問 26
ECC800 default management authority user name is admin, admin has all the rights to operate the web interface function.
- A. TRUE
- B. FALSE
正解: A
質問 27
UPS2000-G-(6-20kVA) battery discharge time is significantly lower than the standard time may be caused by what? (Multiple choice)
- A. No mains input
- B. The battery is not full
- C. Battery capacity reduction
- D. Increased load
正解: B,C,D
質問 28
The NetCol 8000-A compressor has a large amount of foam in the oil sight glass for a long time, indicating that the superheat is too large.
- A. True
- B. False
正解: B
質問 29
Which of the following are the characteristics of Huawei NetCol5000-A row-level precision air conditioner cooling capacity adjustment?
- A. When the load is lower than 20%, the electric heating heat compensation is turned on, and the compressor is continuously operated without stopping.
- B. Invariable frequency compressor, can't adjust cooling capacity infinitely.
- C. When the load is lower than 30%, the compressor starts and stops frequently, and the valve frequently actions and is easily stuck.
- D. DC inverter compressor, which can 20%~100% infinitely adjust cooling capacity.
正解: A,D
質問 30
When the NetCol5000-C commissions the drainage device, lift the high floater by hand for 5 seconds. At this time, the dual water pump is turned on at the same time, and the "discharge abnormality alarm" appears.
- A. TRUE
- B. FALSE
正解: A
質問 31
ECC800 does not support historical data export.
- A. True
- B. False
正解: B
質問 32
Which of the following factors affect battery life? (Multiple Choice)
- A. Number of cycles
- B. Temperature
- C. Depth of discharge
- D. Rated capacity
正解: A,B,C
質問 33
The data center energy efficiency PUE is as small as possible, and the minimum can be close to zero.
- A. True
- B. False
正解: B
質問 34
In general, the air supply distance of the air duct is shorter than that of the hood air supply.
- A. TRUE
- B. FALSE
正解: B
質問 35
After the air conditioner is commissioned, the indoor temperature is in a reasonable state, and the suction pressure is not lower than ( ).
- A. 7MPa
- B. 6Mpa
- C. 5MPa
- D. 0.7MPa
正解: D
質問 36
DOD (depth of discharge) indicates the percentage of battery discharge and battery rated capacity.
- A. True
- B. False
正解: A
質問 37
When the UPS2000-G-(6-20kVA) is in ECO mode, the battery indicator and bypass indicator are on at the same time.
- A. True
- B. False
正解: B
質問 38
When installing the UPS battery, the installation tool does not need to be insulated because the load is not charged.
- A. True
- B. False
正解: B
質問 39
In the naming of UPS5000-E-120K-HASBS, the letter E stands for ().
- A. Input switch type is MCCB
- B. Input switch type is ATS
- C. E series modular UPS
- D. 208V voltage system
正解: C
質問 40
The NetCol5000-A35kW air conditioner has a light load dehumidification function.
- A. True
- B. False
正解: B
質問 41
The reasonable exhaust pressure range of NetCol5000-A is ( ) Mpa. (Multiple choice)
- A. 2.5~3.8 （ 35~45° )
- B. 1.5~2.5 （ below 15° )
- C. 3.1~4.15 （ above 45° )
- D. 1.5 ~3.1 （ 15~35° )
正解: A,B,C,D
質問 42
The device accesses the ECC800 monitoring system through a smart ETH socket, using the () interface of the intelligent FTH socket.
- A. PoE
- B. AI/DI
- C. FE
- D. RS485
正解: A
質問 43
Which humidifier is used by the NetCol 8000-A?
- A. Infrared humidifier
- B. Electrode humidifier
- C. High pressure micro-mist humidifier
- D. Wet film humidifier
正解: A
質問 44
How many kVA power modules does the UPS5000-S-400K use?
- A. 0
- B. 1
- C. 2
- D. 3
正解: B
質問 45
When the NetCol5000-A removes the air conditioning humidifier, the steps to maintain the electrode humidifier include (). (Multiple choice)
- A. Replace the hardened and brittle hose thoroughly flush the drain
- B. Disconnect the water supply valve and drain valve wiring
- C. Remove and clean the water supply valve
- D. Remove the drain tank and drain valve component
正解: A,B,C,D
質問 46
What are the access control type of the micro module? (Multiple Choice)
- A. Fingerprint swipe access control machine
- B. Fingerprint password swipe access control machine
- C. Face recognition access control
- D. Password swipe access control machine
正解: A,B,D
質問 47
When the single machine is working, after the function of power-off of the ups2000-g machine is prohibited, the PL port has no output when overload or battery power is low.
- A. True
- B. False
正解: B
質問 48
At present, the industry PUE value can be optimally achieved ( ).
- A. 1.06
- B. 0
- C. 0.5
- D. -0.5
正解: A
質問 49
When the device interface uses the Modbus-RTU protocol, what needs to be installed when accessing the ECC800?
- A. AC actuator
- B. ETH converter
- C. Access control actuator
- D. sunroof actuator
正解: B
質問 50
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最新（2021)Huawei H12-421-ENU試験問題集：https://www.passtest.jp/Huawei/H12-421-ENU-shiken.html