Which statement regarding garbage disposal is correct?（）
A、Records for ground garbage disposal are not required when disposal into the sea occurs more than 25 miles offshore
B、Discharging or transfer of garbage while in port to a shore facility must he recorded
C、Maintaining records for the incineration of garbage aboard ship is not required
D、The recording of garbage disposal should include the approximate weight
B
If two AC generators are to be operated in parallel, the load is distributed evenly by（）
A、means of rheostat the governor settings
B、a balance coil excitation
C、adjusting the governor settings
D、changing excitation
C
A leaking diesel engine fuel injector will cause（）
A、prolonged maintenance intervals
B、improved atomization
C、greater fuel economy
D、incomplete combustion
D
Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinderIf the cooling water temperature from all cylinders begins to rise above normal, you should suspect （）
A、increase blow-by in all cylinders
B、incomplete combustion in all cylinder
C、overloading in all cylinders
D、insufficient fuel delivery to all cylinders
C
When start a screw pump, the by pass valve should be （）.
A、closed
B、opened fully
C、cracked open
D、partly open
B
When starting a reciprocating pump, the inlet valve should be （）.
A、closed
B、opened fully
C、cracked open
D、partly open
B
Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A、starting the engine while hot
B、knurling the piston skirt
C、operating the engine overheated
D、scuff resistant piston rings
C
Sacrificial zinc anodes are used on the saltwater side of diesel engine heat exchangers to（）.
A、reduce electrolytic action on heat exchanger metals
B、keep heat transfer surfaces shiny and clean
C、prevent rapid accumulation of marine growth
D、provide a protective coating on heat exchanger surfaces
A
A transformer in an electric circuit serves to （）
A、generate its own electrical power
B、transform electrical energy into mechanical energy
C、increase or decrease circuit voltage as required
D、convert AC current to DC current
C
While loading bulk oil, you notice oil on the water near the bargeWhich of the following actions should you carry out FIRST?（）
A、Search the vessel for leaks
B、Notify terminal superintendent
C、Stop loading
D、Notify the Coast Guard
C
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