In this agenda, the refrigerant has undergone the change process of high-pressure gas, high-pressure liquid, low-pressure liquid, and low-pressure gas. In the air-conditioning system, please sort the flow direction of the refrigerant. (Sorting question)

The cycle life of a battery is proportional to the depth of discharge.

Which of the following features are standard features of NETCOL8000-C air conditioners?

Which of the following certifications has the PDU8000 precision power distribution cabinet passed? (Multiple choice)

The UPS5000-E power chess block adopts a fan fault-tolerant design. When two of the fans are damaged, what percentage of the power module can still be loaded?