单项选择题
A fuel leak occurs in the high pressure fuel piping between the injection pump and fuel nozzleThis requires immediate repair because of the （）
A.high cost of fuel
B.serious fire hazard
C.possibility of pollution
D.poor combustion which will occur in that cylinder
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A.lube cooler failure
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In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the （）
A.fuel must be preheated
B.intake air should be preheated
C.lube oil outlet temperature should be increased 20℃ above normal
D.none of the above
