A.Gravity siphon effect
B.Higher vacuum in the second-stage
C.Difference in brine density between first and second stages
D.lower pressure in first-stage
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A.decreased compression ratio
B.higher than normal power consumption
C.un-loader malfunction
D.water in the lubricating oil
A.reduce friction between moving surfaces
B.provide even distribution of bearing wear
C.reduce the accumulation of harmful detergents
D.maintain a constant oil temperature output at each beating
A.vapor feed heater
B.air ejector condenser
C.saltwater heater
D.distillate cooler
A.ballast tanks
B.sludge tanks
C.machinery space bilges
D.cargo hold bilges
A.excessive drive motor speed
B.excessive pump discharge pressure
C.too low of a tilting box angle
D.insufficient drive motor speed
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If the viscosity of the liquid being transferred remains constant as the discharge pressure increases, the rotary pump （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
When a refrigeration compressor has developed a high head pressure as a result of a refrigerant overcharge, you should （）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
Thermostatic expansion valves can be adjusted for （）.
If the head pressure of a reciprocating refrigeration compressor is excessive, （）.
A pressure drop through the refrigerant liquid line may cause （）.
Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.
When the steering gear is in operation, you should （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.