To minimize corrosion, fuel oil strainer disks, spacers and scraper blades are made of （）.

[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]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]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]Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, could result in （）A . increased fuel consumptionB . increased feed water consumptionC . fuel pump failureD . combustion control system failure

[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

[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]Impurities in the fuel oil will affect the operation of the engine, which has （） the use of separator and some other devices.A . brought aboutB . caused forC . resulted fromD . led

[单选题]The fuel oil pressure and forced draught pressure should be matched to ensure good combustion with a full steady flameIn the sentence the word “match” means （）A . join withB . mixC . be equal toD . be constant