QUESTION: 21

R410a refrigerant in the moment of spray out, can frostbite human skin and deeper muscles in a very short period of time and cause frostbited dermal necrosis.

TRUE
FALSE

Answer(s): A

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QUESTION: 22

There are three different categories of earthing (TN, TT and IT) in low voltage distribution systems. What does the first letters represent?

Indicates the relationship of the power system to the exposed conductive parts of the power receiving system
Indicates the power system on the ground
Indicates the relationship between neutral N and protective earth PE
Indicates power receiving system exposed conductive parts and the relationship between the ground

Answer(s): B

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QUESTION: 23

The parameters that can reflect the energy efficiency state and power usage effectivenes of the data center are (_______________).

COP
PUE
IP
OPEX

Answer(s): B

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QUESTION: 24

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

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
Air flow from the central outlet sent through the work area and then discharged from the lower air outlet
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
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

Answer(s): A

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Free H12-411 Exam Braindumps (page: 7)

QUESTION: 21

QUESTION: 22

QUESTION: 23

QUESTION: 24

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