During the use of the battery pack, the appearance is normal, but there is no current during charging, and the voltage drop is zero at the moment of discharge, and it cannot be discharged. What could be happened in the following?

• A.backward battery
• B.Battery leakage
• C.Sulfation
• D.Breaking the battery pack

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NetEco mobile app supports WiFi with a maximum effective distance of ( ) meters.

• A.40
• B.30
• C.50
• D.20

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When the battery is out of control, what is the main cause of deformation and bulging due to the internal pressure becomes larger?

• A.More electrolyte
• B.Plate gasification
• C.Electrolyte leakage
• D.Gas precipitation

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The NetCol 8000-A100kW is dual-system and comes standard with a single indoor unit connected to an outdoor unit.

• A.True
• B.False

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Huawei NetCol5000-A line-level precision air conditioner mainly solves the hot issue of high-density data center.

• A.FALSE
• B.TRUE

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