A.proportional control
B.integral control
C.derivative control
D.on-off control
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A.fuel manifold
B.lubricating pipe line
C.auxiliary engine pipe line
D.generator output line
A.Routine supervisory labor particularly the unproductive night-service labor is reduced
B.Engine mal-operation is automatically sensed and manned
C.The engine room need be manned at night in bad weather or close waters
D.Some remedial measures can be taken automatically
A.internal heat it can withstand
B.load it can carry continuously
C.load it is capable of supplying
D.overload it can carry for a specified time only
A.full excitation
B.load
C.power factor
D.number of poles
A.blow out coils
B.governor relay
C.under voltage trips
D.reverse current trips
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（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
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One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The shipboard oil pollution emergency plan will be invalid after （）
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Using a file without a handle may result in （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
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