Free Huawei H12-411 Exam Dumps Questions & Answers

Which of the following description about sending back to send air is correct?

• A.  Air flow from the upper outlet sent out into the work area and then discharged from the upper air outlet to form on the back to send the air flow organization
• B.  No need to control the entire space as a control object, only the air conditioning area located in the lower part of the room to control
• C.  The air outlet is located in the upper part of the air-conditioned room and the air return is located in the lower part of the air-conditioned room
• D.  Air flow from the central outlet sent through the work area and then discharged from the lower air outlet

The features of UPS are (). (Multiple Choice)

• A.  Steady frequency
• B.  Anti-voltage surge
• C.  steady voltage
• D.  continue to supply power to the load when there is no utility power

Ascending workers should be equipped with the seat belts which is necessary and meeted the safety requirements, and use properly and reasonably according to the use of the provisions: meanwhile, should have guardian's guardianship.

• A.  True
• B.  False

What throttle devices does Huawei air-cooled precision air conditioning use? (Multiple choice)

• A.  Orifice
• B.  Thermal expansion valve
• C.  Solenoid valve
• D.  Electronic expansion valve

Which fire extinguishing agent is mainly used in data center fire protection system?

• A.  Halon 1301
• B.  Heptafluoropropane
• C.  water
• D.  Haloalkanes