The pressure difference of the gauge on the oily water separator increases greatly, the reason is（）
1、The type of gauge most commonly used t
The type of gauge most commonly used to measure pressure is the （）.Abimetallic typeBdiaphragm typeCbourdon tube typeDresistance-temperature type
2、The purpose of the low pressure cut-ou
The purpose of the low pressure cut-out switch is to （）.Amaintain liquid refrigerant at the suction of the compressorBmaintain a preset suctio...
3、The sudden reduction of pressure occur
The sudden reduction of pressure occurring within the crankcase of a refrigeration compressor during starting causes the （）.Asudden evaporation ...
4、One of the main differences between th
One of the main differences between the various types of screw pumps is in the （）.Astuffing box diameterBdirection of rotation of the screwsCpitch of the screwsDtype of driving gear
5、The pressure of a liquid leaving the p
The pressure of a liquid leaving the pump can be referred to as the （）.Atotal headBdischarge headCnet positive suction headDsuction head
6、The daily recurring pattern of pressur
The daily recurring pattern of pressure changes most noticeable in low latitudes is the （）.Adaily lapse readingBdiurnal variation of pressureCpressure tendencyDsynoptic pressure