During the watch at sea （） should be logged or recorded in the engine log book.
A、the running hours of the cooling water pump
B、chief engineer’s order
C、the main parameters of main and auxiliary equipment
D、the position of the vessel
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A diesel engine should not be operated at low loads for long periods of time because（）
A、heavy carbon deposits will buildup on the valves and in the exhaust
B、fuel dilution is increased at low load
C、exhaust valves may be damaged
D、all of the above
Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except （）
A、open the indicator cocks
B、supply some LO to cylinder liner wall with lubricator
C、put the fuel handle in the stop position
D、pump up the air bottle
The over-speed trip device installed in some diesel engines is automatically actuated by（）
A、spring force
B、hydraulic pressure
C、centrifugal force
D、mechanical linkage
STCW shall apply to seafarers（） on board seagoing ships entitled to fly the flag of a Party.
A、served
B、serving
C、surveyed
D、surveying
Which of the listed substances can be satisfactorily removed from diesel fuel by centrifuging?（）
A、Sludge
B、Gasoline
C、Fuel oil
D、Lube oil
