A.Lobe
B.Screw
C.Radial piston
D.Volute

A.They are particularly suited for pumping high viscosity fluids
B.They are started with the discharge valve opened
C.The flow of liquid is developed by imparting energy due to the rotation of an impeller
D.They are always mounted in a horizontal position

A.refrigerant pressure in the evaporator
B.cooling water temperature to the condenser
C.heat load in the refrigerator compartment
D.solenoid valve in the liquid line

A.compressor
B.condenser
C.expansion valve
D.evaporator

A.bimetallic type
B.diaphragm type
C.bourdon tube type
D.resistance-temperature type

A.evaporator coils
B.liquid strainer
C.compressor
D.condenser

A.suction side of a bilge pump
B.exhaust manifold of an auxiliary diesel
C.discharge line from an air compressor
D.chemical feed tank of an evaporator

A.They should always be started with the discharge valve closed
B.They should always be started with the discharge valve opened
C.A priming pump is always required to flood the impeller suction
D.They should always be started with the sealing line valves closed

A.compressor damage from improper lubrication
B.refrigerant absorption by the lubricant
C.increased viscosity in the lubricant
D.carbon deposit on the compressor suction valves

A.Spring-centered valve
B.Unloading valve
C.Three-position valve
D.Two-position valve

A.Expansion valve
B.Condenser
C.Evaporator
D.Compressor