The following air conditioning systems need to be equipped with a cooling tower or dry cooler ().

• A.DX air-cooled type
• B.DX water-cooled type
• C.Direct ventilation air conditioning system
• D.CW air-cooled type

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For storage batteries that have been stored for 18 months or longer, the battery that has not been recharged should be processed ().

• A.Need to supplement the electricity treatment, use as soon as possible
• B.Disposal
• C.No need to deal with, use as soon as possible
• D.Need activation treatment, use as soon as possible

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The power indicator of the gas fire extinguishing controller is on and the alarm indicator is off indicating that the gas fire extinguishing controller is working properly.

• A.False
• B.True

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

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The Netcol 5000-A35kW uses an electronic expansion valve.

• A.True
• B.False

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