A.Fire pump and lube oil pump
B.Lube oil pump and distilling plant
C.Distilling plant and shaft alley door
D.Shaft alley door and fixed CO2 release
您可能感興趣的試卷
你可能感興趣的試題
A.bypass the high pressure stage to the low pressure stage on 100% of the air compressors in service
B.prevent excessive inter-stage pressure buildup
C.control compressor discharge pressure
D.remove all but the frictional load during starting
A.The relief valves in the system should be readjusted
B.The filters and strainers should be checked frequently
C.All system pressure should be readjusted
D.The system should be drained and renewed with a fluid of different operating characteristics
A.100℃
B.125℃
C.150℃
D.175℃
A.maintain radial alignment between the pump impeller and casing
B.absorb all impeller shaft end thrust
C.prevent water leakage to the atmosphere
D.prevent wear of the pump casing and/or impeller
A.psychrometer
B.salinometer
C.anemometer
D.sphygmomanometer
最新試題
Thermostatic expansion valves can be adjusted for （）.
An internal bypass is provided on some hydraulic system suction strainers to help reduce the possibility of （）.
Heavy wear in a particular area of the inner circumference of a packing ring may be caused by （）.
One cause of high head pressure occurring in a refrigeration system can be （）.
The control mode in which the final control element is moved from one of two flexed positions to the other is known as （）.
Low compressor head pressure in a refrigeration system can be caused by（）.
If the relief valve on the discharge side of a hydraulic pump lifts, the cause could be （）.
On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
Who is responsible for ensuring that someone is assigned to close the watertight doors in an emergency?（）
The general purpose of a heat exchanger is to （）.