A.Carry out soot blowing if permissible
B.Change fuel supply to diesel oil
C.Close steam stop valves on boiler when pressure is reduced
D.Drain boiler empty when it has cooled down
您可能感興趣的試卷
你可能感興趣的試題
A.blow
B.clean
C.scavenge
D.purge
A.main stern stop valve
B.auxiliary steam stop valve
C.scum valve
D.blow down valve
最新試題
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The shipboard oil pollution emergency plan will be invalid after （）
If separating effect is not good, which measure should be taken （）