A diesel engine is turned at normal cr

1、If a diesel engine were running at 20%

If a diesel engine were running at 20% overload with a smoky exhaust, you should（）Astop the engine immediately to prevent damageBincrease lube...

2、A diesel engine is equipped with an is

A diesel engine is equipped with an isochronous hydraulic governorA decrease in load will cause the engine speed to （）Adecrease onlyBincrease onlyCdecrease slightly then returned to original speedDincrease slightly then returned to original speed

3、A diesel engine is turned at normal cr

A diesel engine is turned at normal cranking speed and no ignition occursThis could be the result of （）Alow lube oil temperatureBlow starting air temperatureCair bubbles in the fuel oil systemDwater in the starting air system

4、Before a marine diesel engine is start

Before a marine diesel engine is started the cylinders and pistons must be （）.Acooled to appropriate temperatureBwarmed up gradually to appropriate temperatureCopened up and renewedDground and polished

5、In a normally operating diesel engine,

In a normally operating diesel engine, the main cause of lubricating oil contamination in the crankcase is a result of the （）.Ametal particle...

6、Misfiring in a diesel engine at light

Misfiring in a diesel engine at light loads can be caused by（）Ahigh lube oil temperatureBlow lube oil temperatureCexcessive cylinder coolingDhigh air injection pressure