A.cold fuel oil
B.low fuel oil pressure
C.low atomizing steam pressure
D.water in the fuel oil
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A.adding hydrazine
B.blowing down the boiler
C.adding phenolphthalein
D.adding a sulfite chloride scavenger
A.increase exhaust gas velocity through the boiler
B.reduce accumulations of carbon deposits on the heat transfer surfaces
C.eliminate exhaust gas pulsations and noise
D.increase the rate of heat transfer to the waterside
A.soap hardness
B.nitrog encontent
C.chloride content
D.dissolved CO2
A.Hydrazine treatment of condensate
B.Frequent compounding
C.Chemical cleaning
D.Bottom blowing
A.water in the fuel oil
B.broken high tension leads
C.incorrect electrode setting
D.full fuel pressure at the nozzle
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The main purpose of port State control is not to（）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Flame failure in an automatically fired auxiliary boiler can from a/an （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
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Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The treatment of the fuel oils involves storage, heating, filtering and（）
Using a file without a handle may result in （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.