A.air chamber
B.head lank
C.primer
D.prime mover
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A.eye
B.hole
C.balance holes
D.opening
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
最新試題
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
If separating effect is not good, which measure should be taken （）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The cetane rating of diesel fuel is an indication of the （）
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.
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）