Free Huawei H12-421-ENU Exam Dumps Questions & Answers

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

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

How many NetCol5000-C water-cooled line-class precision air conditioners can be supported by one NetCol520 chilled water distribution unit?

• A.  10
• B.  8
• C.  6
• D.  12

The NetCol5000-A35kW indoor unit installation needs to be connected to the zero line.

• A.  False
• B.  True

Which is not a routine maintenance item of the ECC800 power module?

• A.  Create a micro-module plan view
• B.  Check if the power indicator is normal.
• C.  Check the ECC800 module fan
• D.  Check if the power wiring is loose

When the differential pressure switch of the air filter of the indoor unit is closed, it indicates that the filter is too dusty and should be disposed of in time.

• A.  False
• B.  True