A.act as a shock absorber
B.maintain the stored oil under pressure
C.act as a base or foundation for the power unit
D.eliminate pressure surges in the system

A.admit only enough fresh outside air to provide proper ventilation
B.reduce the air reheating system load
C.lower the compressor head pressure
D.operate the purge recovery unit continuously

A.lowest absolute humidity
B.lowest relative humidity
C.highest absolute humidity
D.highest relative humidity

A.change from blue to orange
B.‘flare up’ and remain lighted
C.probably go out
D.stay blue

A.flushed with clean refrigerant oil
B.purged with the refrigerant
C.washed with an ammonia and alcohol solution
D.grounded to compressor

A.petroleum crystals
B.phosgene gas
C.water vapor
D.carbon monoxide

A.be clear
B.be blue
C.be light green
D.show bubbles

A.temperature in the space being cooled
B.liquid refrigerant pressure at the solenoid valve
C.pressure drop across the evaporator coils
D.refrigerant gas superheat at the coil outlet

A.remains the same
B.is reduced
C.is increased
D.is eliminated

A.corrosion on the gears
B.excessive gear speed
C.dirt in the oil
D.misalignment of the gears

A.maintain alignment when the ship’s hull is working in heavy seas
B.ensure engine vibrations correspond to the natural frequency of the hull
C.permit the engine to expand away from the driven equipment as the engine heats up and expands
D.maintain engine thrust bearing clearances