单选题An electrically driven automatically operating auxiliary blower is provided for slow speed and （） of a low speed diesel engine.Amanoeuvring operationsBbad combustionCcoolingDmooring trial
单选题
An electrically driven automatically operating auxiliary blower is provided for slow speed and （） of a low speed diesel engine.
A
manoeuvring operations
B
bad combustion
C
cooling
D
mooring trial
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