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
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If the coolant temperature of a closed cooling water system for a diesel engine gradually increases, the trouble usually is （）
A、a broken shaft on the freshwater pump
B、an excessive accumulation of scale exchanger
C、an incorrect thermostatic element operating range
D、lube oil in the cooling water
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
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
The necessity for administering artificial respiration may be recognized by the victims （）.
A、vomiting
B、blue color and lack of breathing
C、irregular breathing
D、unconscious condition
