Compressor. Fan. Pump. According to the relevant information in the library, it is learned that the training content of power equipment includes compressors. Fan. Contents of pumps and compressors: including reciprocating compressors, centrifugal compressors, screw compressors, turbine compressors and fans: including centrifugal blowers, axial blowers, Roots blowers and pumps: including centrifugal pumps, gear pumps, piston pumps, screw pumps, diaphragm pumps and water ring vacuum pumps.