单选题
发布日期:2021-03-22
bypass the high pressure stage to the low pressure stage on 100% of the air compressors in service
prevent excessive inter-stage pressure buildup
control compressor discharge pressure
remove all but the frictional load during starting
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An un-loader is installed on an air compressor to ().
An un-loader is installed on an air compressor to ().
Air receivers installed in starting air systems are to be ().
Air receivers installed in starting air systems are to be ().
Wires that are installed in air returns above a ceiling must be()
Intercoolers installed on starting air compressors, reduce the possibility of()
Intercoolers installed on starting air compressors, reduce the possibility of()
An after-cooler installed between the turbocharger and the cylinder air inlet ()
An after-cooler installed between the turbocharger and the cylinder air inlet ()
The air compressor pumps air to the().