A.a brief trial with turning gear
B.a brief trial on power
C.a long trial by steering gear
D.one minutes trial with windlass
第1题
A.is an indication of the amount of noncombustible material present in the oil
B.indicates the quantity of energy released by burning a unit amount of the fuel
C.is useful for determining proper atomization temperatures
D.reflects the overall thermal efficiency of the fuel oil service system
第2题
A.engine room bilges
B.main switchboard
C.paint locker
D.rag bin
第3题
A.to reduce heat stress
B.to reduce low temperature corrosion
C.to improve firing and starting performance
D.fuel saving
第4题
A.Power factor
B.Power ratio
C.compression ratio
D.Compression factor
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