A.fuel oil supply temperature is normal
B.burner electrode is incorrectly positioned
C.fuel／air ratio is incorrect
D.ignition current is too low
您可能感興趣的試卷
你可能感興趣的試題
A.when the boiler has been secured long enough for most solids to settle
B.when the boiler has been cooled to ambient temperature
C.only after raising the water level to within 0~5 inch of the high water cutout only
D.after bypassing the low pressure
A.completely drain the boiler in an emergency
B.prevent sludge from forming in the drum
C.remove floating impurities from the boiler water surface
D.remove settled solids from the water drum
A.defective solenoid valve
B.dirty fuel nozzle
C.grounded high tension lead
D.faulty ignition cable connector
A.excessive purging before lighting off
B.insufficient trail for ignition period
C.a faulty transformer in the ignition circuit
D.insufficient purging before lighting off
A.prevent engine back pressure at heavy loads
B.increase total engine efficiency at low loads
C.prevent boiler corrosion at low engine loads
D.improve engine fuel consumption at any load
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
The treatment of the fuel oils involves storage, heating, filtering and（）
If separating effect is not good, which measure should be taken （）
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
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 main purpose of port State control is not to（）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）