When using a fuel with a higher than normal sulfur content in an auxiliary four stroke diesel engine, you may

A．maintain higher than normal jacket water temperature

B．change the lube oil more frequently than normal

C．maintain a higher air-box temperature than normal

D．maintain a higher air-box pressure than normal

[单选题]His salary as a driver is much higher than _____________.A.a porter B.is a

[主观题]when the fuel is provided by the supplier ,what specifications of the oil can you get from the supplier receipt ?

[单选题]The salary of taxi driver is much higher than ________ salary.A.the teacher

[单选题]Re-circulating the fuel when the engine is stopped can______.①keep the fuel at the correct viscosity ②cool the injectorA．①B．②C．①②D．neither ① nor ②

[单选题]When fuel is injected late into a diesel engine cylinder_______.A．the exhaust will be clearB．fuel consumption will be lowC．all the fuel will be burned at top dead centerD．fuel consumption will be high

[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 needle valve will open when the fuel pressure acting on the needle valve （） exerts a sufficient force to overcome the spring compression.A . tape faceB . tapered faceC . surfaceD . thinner face

[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]When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.A . filter to remove the fuel oilB . use the settler to remove the fuel oilC . remove the fuel oil by centrifugingD . drain and then renew the lube oil supply

[单选题]When centrifuging heavy fuel oil, an important factor to consider is the （）(1) flow rate(2) viscosity of the fuel oilA . (1) only is correctB . (2) only is correctC . both (1) and (2) are correctD . neither (1) or (2) are correct