Huawei H12-411_V2.0 - HCIA-Data Center Facility V2.0

The following outdoor unit models belong to dual fans are ____________ .

The throttling devices used by Huawei's air-cooled precision air conditioners are ____________ .

When the AC power equipment is introduced in the three-phase four-wire system, in addition to the grounding of the near end of the power transformer, the near end of the electrical equipment and the equipment room should be grounded repeatedly on the neutral line.

The refrigerant used by Huawei precision air conditioner is ____________ .

Dual power switch ATS According to different switch types, it can be divided into ____________ .

Regarding the description of the data center cooling system, the following ____________ is wrong.

The type of compressor used by Huawei's air-cooled precision air conditioner is ____________ .

The role of the lead-acid battery battery is to contain electrolyte, plates, separators, etc.

Compared with comfort air conditioners, special air conditioners for computer rooms have the following advantages ____________ .

In Huawei's dynamic environment monitoring system, it is at the data collection layer and can integrate the underlying components ____________ . The equipment through which information is transmitted to the monitoring software is ____________ .