单项选择题
An AC synchronous transmission type remote steering control system consists of a （）.
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
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相关考题
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单项选择题
In which of the areas listed would you expect to find the highest salt concentration in a flash evaporator?（）
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
The component of a refrigerating system in which the refrigerant vaporizes and absorbs heat is known as the （）.
A.condenser
B.vapor generator
C.accumulator
D.evaporator -
单项选择题
The low pressure side of a refrigeration system is considered to exist from the （）.
A.expansion valve to the compressor
B.receiver to the expansion coil
C.expansion valve to the evaporator
D.condenser to the expansion valve
