单选题As oil pipe line connections were broken，（）quantity of oil was caused to spill onto the wharf and into the dock water.A a not knowingB an unknowingC an unknownD a not known

According to this passage, if the cylinder non-return valve were not leaky

A.an explosion would not be caused

B.there still would be a danger of explosion

C.oil would not deposit in the air pipe

D.pipe lines would not have to be drained

Which of the following is NOT on the list items to be recorded in Oil Record Book Part I (machinery space operation)?

A.accidental discharge of oil

B.disposal of oil residues

C.quantity of water produced by F.W.G

D.discharge of dirty ballast or cleaning water from fuel oil tanks

If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the

A.fuel line connections to the cylinder injection valves

B.gasket surfaces of the fuel oil filters

C.discharge fittings of the fuel injector pumps

D.suction side of the fuel oil transfer pump

You have completed a crude oil wash．What action should be taken with the oil in the lines running to the washing machines ________．

A.Open a COW nozzle forward and one aft and drain the line into the after tank by gravity

B.Blow the line out using compressed air

C.Pull a suction using the supply line pump

D.Close off all valves in the system and leave the oil in the line primed for the next crude oil wash

______continuously extract the crankcase atmosphere, via a pipe system, and move it past a sensitive and accurate opacity(不透明性) measuring track.

A.The oil mist detectors

B.The smoke detectors

C.An oily water monitor

D.Oil discharge monitoring and controlling system

The oil transfer procedures aboard a tanker transferring oil are NOT required to contain ______．

A.The name of each person designated as the person in charge of transfer

B.A line diagram of the vessel's oil transfer piping

C.Special procedures for topping off tanks

D.A description of the deck discharge containment system

Crankcase explosions in propulsion diesel engines result from ____.

A.the splashing of lubrication oil by the crankshaft

B.the dilution of crankcase oil with particles of combustion

C.broken fuel lines spraying oil on the crankcase

D.the ignition of unburned fuel and air in the crankcase

As oil pipe line connections were broken, _____ quantity of oil was caused to spill onto the wharf and into the dock water.

A.a not knowing

B.an unknowing

C.an unknown

D.a not know