A.stop valves
B.non-return valves
C.quick closing valves
D.relief valves
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A.a pressure reducing valve
B.a pilot valve
C.an operating piston
D.downstream pressure
A.adjusting a nut
B.a pre-tensioned spring
C.any spring
D.upstream pressure
A.aeration tanks
B.settling tanks
C.disinfection agent
D.anaerobic bacteria
A.accidents
B.special valve chests
C.interchangeable blanks
D.connecting passages
A.a test valve
B.an inspection valve
C.a stop valve
D.a non-return valve
最新試題
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.
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
Under MARPOL Code the ship to which it applies has to carry （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
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Cold weather starting of a diesel engine may be made easier by（）