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
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
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Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
If separating effect is not good, which measure should be taken （）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
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The shipboard oil pollution emergency plan will be invalid after （）
Under MARPOL Code the ship to which it applies has to carry （）