A.lobe type
B.screw type
C.axial piston type
D.volute type
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A.increase the fuel oil temperature
B.decrease the fuel oil temperature
C.decrease the fuel oil supply pressure
D.increase the air supply
A.keyway
B.shaft
C.packing
D.valve
A.turbine
B.centrifugal
C.ejector
D.mixed flow
A.has learnt
B.have learnt
C.learn
D.are learning
A.closed discharge valve
B.broken pipe line
C.worn shaft
D.both A and B
最新試題
The main purpose of port State control is not to（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
The cetane rating of diesel fuel is an indication of the （）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Under MARPOL Code the ship to which it applies has to carry （）
The condensers located in various stages of a flash evaporator are cooled by（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
Diesel engine air start system check valves are opened by （）