A.clean the flame scanner photocell window
B.Inspect and clean all solenoid valves
C.lift the safety valves by hand
D.Inspect for oil or water leaks
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A.cold fuel oil
B.low fuel oil pressure
C.low atomizing steam pressure
D.water in the fuel oil
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
最新試題
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The condensers located in various stages of a flash evaporator are cooled by（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
The additional mark （）in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
To proceed to the assistance of a ship in distress is（）
Cold weather starting of a diesel engine may be made easier by（）