Online Access Free H12-411 Exam Questions

For valve-regulated lead-acid batteries, what are the role of safety valve? (Multiple choice)

• A.prevent air from entering
• B.Exhaust excess gas
• C.Participate in chemical reactions
• D.Conductive

Huawei NetEco monitoring system must not support the monitoring of third-party devices.

• A.True
• B.False

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

• A.True
• B.False

Air energy efficiency ratio is the ratio of effective input power and cooling capacity, its value will be shown as W/W.

• A.True
• B.False

Valve-regulated lead-acid battery safety valve has () function. (Multiple choice)

• A.Flame retardant
• B.Adjust the battery pressure inside and outside
• C.Anti-battery internal pollution
• D.filter acid mist