Fuel oil is thought to be one of the main factors （） the operation and maintenance of an engine.

[单选题]In a typical fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.A . a service tankB . a collecting tankC . a sumpD . a settling tank

[单选题]The quality of the fuel oil and lube oil （）, Im afraid.A . has much to do with the operation of the engine and its lifeB . have much to do with the operation of the engine and its lifeC . has much doing with the operation of the engine and its lifeD

[单选题]Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.A . cold corrosion of the nozzlesB . fuel viscosity for better atomizationC . carbon accumulation on the nozzlesD . fuel detonation in the cylinder

[单选题]If there is water in fuel oil, the revolution of the engine will （）.A . decreaseB . increaseC . be dismantledD . be reassembled

[单选题]When the fuel oil is burning in the combustion chamber, it _____.A．gives up large amount of heatB．gives off large amount of heatC．gives up large amount of steamD．gives off large amount of steam

[单选题]The fuel oil system for a diesel engine can be considered in two parts--the fuel supply and the （） systems.A . fuel treatmentB . fuel combustionC . fuel injectionD . fuel separating

[单选题]In a typical fuel system, the oil is stored in （） in the double bottom.A . setting tanksB . service tanksC . tanksD . drain tank

[单选题]Dirt in the fuel oil system of a diesel engine can cause （）.A . clogged filtersB . poor combustionC . overloading of the dieselD . shock of fuel line

[单选题]In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.A . a service tankB . a settling tankC . an expansion tankD . a double bottom tank

[单选题]Fuel oil begins injection into the cylinder of a four-stroke/cycle diesel engine during the （）.A . intake strokeB . exhaust strokeC . power strokeD . compression stroke