单项选择题
A.dehydrated B.purged C.plugged D.evacuated
If an air compressor is used to supply compressed air t...
单项选择题If an air compressor is used to supply compressed air to outlets throughout the engine room and on deck of a vessel, the system is known as the （）.
A.combustion control air system B.supply air system C.ships service air system D.low pressure deck air system
The sensible heat of air is dependent upon the （）.A.dry...
单项选择题The sensible heat of air is dependent upon the （）.
A.dry bulb temperature B.wet bulb temperature C.saturation temperature D.water vapor superheat
Which of the devices listed, when used on an electro-hy...
单项选择题Which of the devices listed, when used on an electro-hydraulic steering gear, keeps the movement of the redder closely in step with the steering wheel?（）
A.The follow-up gear B.The rudder angle indicator C.The synchronous electric transmitter D.A rudder angle limit switch
