A.facilitate bi-directional operation
B.provide the greatest pump efficiency
C.prevent pump clogging from marine growth
D.prevent cavitation at the pump outlet
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A.raw water pump discharge
B.expansion tank outlet
C.cooling water heat exchanger
D.outlet engine jacket water outlet
In a diesel engine, a cylinder liner should be replaced if it is （）
Ⅰ.Scuffed
Ⅱ.Scored
A.Ⅰ only is correct
B.Ⅱ only is correct
C.both Ⅰ and Ⅱ are correct
D.neither Ⅰ or Ⅱ are correct
A.metal particles loosened by wear
B.air when air cleaners are not used
C.condensation of water vapors
D.breakdown of the lubricating oil by dilution
A.reduce wear on the valve stem
B.permit the use of alloy valve seat materials
C.reduce heat transfer from the valve seat
D.facilitate valve removal for servicing
A.place standby cooler in operation
B.reduce engine load
C.check thermostatic valve
D.clean sea water strainer
最新試題
The treatment of the fuel oils involves storage, heating, filtering and（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
（） is not installed on the main switchboar.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Which of the listed governor characteristics will greatly affect the load sharing relationship between paralleled diesel generators?（）
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（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）