The fuse can protect personal safety when the equipment leaks.

The following parts can check whether the refrigerant contains moisture ____________ .

There are three different classifications of grounding forms in low-voltage power distribution systems ____________, where the first capital letter represents ____________ .

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

During the implementation process, corrosive operations should be used ____________ .

The basic principle of the rotary dehumidifier is that the water vapor encounters the condensation water droplets of the cooling tube fins to dehumidify.

____________ is used to ensure that the fire extinguishing agent has been sprayed out in a specific jet form to promote the rapid gasification of the fire extinguishing agent and reach the fire extinguishing concentration in the protected space.

The basic principle of infrared heaters is that infrared rays heat water to boiling, thereby generating steam.

Leakage current protector is based on the current exceeds the specified value for a period of time, the melt is melted by its own heat, thereby breaking the circuit.

Huawei monitoring system ECC800 The collector can be inserted at most ____________ A power supply module.