A.turbine
B.screw
C.vaneejector
D.centrifugal
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A.leaky pipe
B.opened inlet valve
C.too much water in tank
D.None of the above
A.Steam trap
B.Check valve
C.Separator
D.Strainer
A.lobe type
B.screw type
C.axial piston type
D.volute type
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
最新試題
The cetane rating of diesel fuel is an indication of the （）
Diesel engine air start system check valves are opened by （）
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
The condensers located in various stages of a flash evaporator are cooled by（）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
If separating effect is not good, which measure should be taken （）
（） is not installed on the main switchboar.
Under MARPOL Code the ship to which it applies has to carry （）