單項(xiàng)選擇題Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()

A.double bottom fuel oil tank temperature
B.heater supply steam flow
C.pressure of the fuel supplied to the burners
D.attemperator steam flow in the heater discharge circuit


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1.單項(xiàng)選擇題“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()

A.substandard ship
B.standard ship
C.over-standard ship
D.reference ship

2.單項(xiàng)選擇題Using a file without a handle may result in ()

A.your work becoming rounded
B.injury to your hand
C.overheating of the file
D.pinning

3.單項(xiàng)選擇題The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()

A.for atomizing
B.for centrifuging
C.in a storage tank
D.in the re-circulating line

5.單項(xiàng)選擇題The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()

A.Navigation Log Book
B.Engine Room Log Book
C.Oil Record Book
D.Muster List