H12-411_V2.0 Pre-Exam Practice Tests | (Updated 203 Questions)
Valid H12-411_V2.0 Exam Q&A PDF - One Year Free Update
NEW QUESTION 47
The principle of the condenser is to cool the high-pressure gaseous refrigerant to release heat into a liquid state to realize the transfer and release of heat.
- A. True
- B. False
Answer: A
NEW QUESTION 48
Sensible heat ratio=Sensible heat/Full heat/Sensible heat/(Sensible heat+Latent heat).
- A. True
- B. False
Answer: A
NEW QUESTION 49
International Electrotechnical Commission ____________. The specified contact voltage limit is
____________V, And stipulate 25V. The following does not need to consider the prevention Safety measures to prevent electric shock.
Answer:
Explanation:
IEC , 50
NEW QUESTION 50
Climbing personnel must be equipped with necessary safety belts that meet the safety requirements, and use them correctly and reasonably according to the use regulations, while being supervised.
- A. True
- B. False
Answer: A
NEW QUESTION 51
RS485 The interface only supports two-wire system, not four-wire system.
- A. False
- B. True
Answer: A
NEW QUESTION 52
The possible functions of the dynamic loop monitoring system include ____________ .
Answer:
Explanation:
operation status monitoring, operating parameter display, alarm information display, remote Process management
NEW QUESTION 53
The administrator cannot segment the login time and login of other users through the Huawei monitoring system IP Address restrictions.
- A. False
- B. True
Answer: A
NEW QUESTION 54
The dynamic environment monitoring system only has a secondary structure.
- A. False
- B. True
Answer: A
NEW QUESTION 55
MCB Circuit breakers can be divided into different tripping characteristics B, C, D, Z, K Level, for IT For load, you should use ____________ class Tripping characteristics.
Answer:
Explanation:
C
NEW QUESTION 56
The access control system can only set the user to open the door, and cannot set when to open the door.
- A. False
- B. True
Answer: A
NEW QUESTION 57
At present, storage batteries are mainly installed in racks and cabinets in data centers.
- A. True
- B. False
Answer: A
NEW QUESTION 58
In the main inverter mode,ups When overloaded, it will switch from the main circuit inverter to the battery inverter mode.
- A. False
- B. True
Answer: A
NEW QUESTION 59
For unsaturated air, dry bulb temperature, wet bulb temperature, A The relationship between point temperature is ____________ .
Answer:
Explanation:
dry bulb temperature>wet bulb temperature>dew point temperature
NEW QUESTION 60
During the construction process, if there is an object falling or hitting, it should be used ____________ .
Answer:
Explanation:
safety helmet, anti-smashing shoes
NEW QUESTION 61
UPS The functions are ____________ .
Answer:
Explanation:
voltage stabilization, frequency stabilization, anti-voltage surge, continuous power supply to the load when there is no mains
NEW QUESTION 62
It can be implemented in the alarm management function of the dynamic environment monitoring system
____________ .
Answer:
Explanation:
locating alarms, querying alarms
NEW QUESTION 63
If ups The capacity is 20KVA, Then in normal work,ups The front-end input capacity may be ____________ .
Answer:
Explanation:
25KVA
NEW QUESTION 64
When the sunroof actuator senses a smoke alarm, it cannot control the turning sunroof to open automatically.
- A. False
- B. True
Answer: A
NEW QUESTION 65
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