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单项选择题
A.change in the impeller diameter
B.square of the impeller radius
C.cube of the impeller diameter
D.impeller efficiency for large changes in its size
单项选择题
A.As pressure decreases, volume increases
B.As volume increases, pressure increases
C.As volume decreases, pressure decreases
D.As pressure increases, volume increases
单项选择题
A.readjust the relief valve
B.throttle the suction line
C.throttle the discharge valve
D.open the priming line
单项选择题
A.transmitter at the steering station and a receiver at the steering engine
B.reversible motor at the steering station geared to the steering pumps
C.small induction motor on the bridge which controls the redder through pulleys
D.variable displacement hydraulic pump driven by a reversible DC motor
单项选择题
A.Distiller air ejector cooling medium
B.Saltwater heater discharge
C.First-stage internal feed box
D.Second-stage internal feed box
单项选择题
A.condenser
B.vapor generator
C.accumulator
D.evaporator
单项选择题
A.expansion valve to the compressor
B.receiver to the expansion coil
C.expansion valve to the evaporator
D.condenser to the expansion valve
单项选择题
A.leaking unloader
B.tripped circuit breaker
C.control line leak
D.defective pop valve
单项选择题
A.superheated
B.saturated
C.dense
D.flooded
单项选择题
A.a separate air ejector unit
B.a direct unimpeded connection between second stage and salt water feed heater
C.either by vacuum drag or an external line from the first stage via a fixed orifice
D.the fixed orifice provided in the steam supply line