Free Huawei H12-411 Exam Dumps Questions & Answers

TN-S low-voltage distribution system in the three-phase unbalanced current, so that the protection line PE generate voltage to ground.

• A.False
• B.True

Which of the following components can check whether the refrigerant contains water?

• A.depending on the oil mirror
• B.water gauge
• C.device for drying and filtering
• D.Solenoid valve

Generally there are two kinds for VAV ventilation, one is through the adjustable air valve, the other is a dedicated ventilation floor plus adjustable fan composition.

• A.False
• B.True

Fuses can protect the personal safety in case of the equipment earth leakage.

• A.TRUE
• B.FALSE

In construction process, the existence of objects falling and impact of operations, () should be used. (Multiple choice)

• A.Insulation gloves
• B.helmets
• C.seat belt
• D.anti-smashing shoes