A.stop valves
B.pressure relief valves
C.balance valves
D.regulating speed valves
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A.steam plants, electric motors and compressed air
B.diesel engine, hydraulic machinery and compressed air
C.steam plants, electric motors and hydraulic machinery
D.diesel engines, steam plants and hydraulic machinery
A.crane
B.hatch cover
C.windlass
D.steering gear
A.possible
B.necessary
C.practicable
D.impracticable
A.erosion
B.corrosion
C.pitting
D.dezincification
A.erosion
B.corrosion
C.cavity
D.scouring
最新試題
Which one is NOT the ‘clear grounds’ for a more detailed inspection?（）
As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
To proceed to the assistance of a ship in distress is（）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Using a file without a handle may result in （）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a（）
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）