The following is for high frequency ups The correct description of the rectifier components is.

Sensible heat ratio=Sensible heat/Full heat/Sensible heat/(Sensible heat+Latent heat).

The following are indirect contact heat and moisture treatment equipment ____________ .

When the mains input range is voltage:150-260VAC,frequency:45-60Hz,the following ups Working range
____________ It can work normally in the inverter state of the main circuit.

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