Before shutting off the fuel supply to

Before shutting off the fuel supply to stop a medium or high–speed diesel engine, why is it necessary to allow the engine to idle for a few minutes?（）

ATo prevent internal damage form local overheating
BTo ensure the fuel nozzles are flushed clean
CTo clear the smoke stack
DTo let the waste heat boiler reduce its rate of steam generatio

参考答案

参考解析：

分类：船舶电气与船舶安全题库

The fuel oil supply system to an automatic auxiliary boiler, will automatically shutdown if the boiler （）Asteam demand is highBsalinity is highCsafety valve simmersDburner flame is extinguished

2、Which is supplied to the vessel by the

Which is supplied to the vessel by the MSA（）.ABell bookBCargo gear registerCOfficial LogbookDRough Logbook

3、The vapors given off by heated fuel oi

The vapors given off by heated fuel oil are flammable, explosive, and （）Alighter than airBheavier than airCodorlessDnontoxic

4、Oil is supplied to the crosshead using

Oil is supplied to the crosshead using a swinging arm or a （） and is sometimes boosted in pressure to and efficient lubrication.Atelescopic pipeBlarge bore pipeCgenerating pipeDcentral pipe

5、The company plans to shut（）four factor

The company plans to shut（）four factories and cut 1,000 jobs.AoutBdownCawayDoff

6、Before being used the fuel service tan

Before being used the fuel service tank should be drained of （）.Asoda solutionBmechanical impuritiesCballastDwater and residual

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