A.eye
B.hole
C.balance holes
D.opening
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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
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
A.main stem stop valve
B.auxiliary steam stop valve
C.feed check or control valve
D.blow down valve
A.main stem stop valve
B.auxiliary steam stop valve
C.feed check or control valve
D.blow down valve
最新試題
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
Using a file without a handle may result in （）
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
To proceed to the assistance of a ship in distress is（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The main purpose of port State control is not to（）
The cetane rating of diesel fuel is an indication of the （）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
The shipboard oil pollution emergency plan will be invalid after （）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）