單項選擇題

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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單項選擇題

In the process of the stand-by, warm-up the engine usually through give preheat of which parts of the diesel engine?（）

A.cooling water of the cooling system
B.fuel of the FO system
C.LO of the LO system
D.cooling water of the cooling system and LO of the LO system

單項選擇題

The main purpose of warming the parts of the main engine is （）

A.to reduce heat stress
B.to reduce low temperature corrosion
C.to improve firing and starting performance
D.fuel saving