单项选择题

Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.

A.under high pressure
B.under low pressure
C.heated to reduce viscosity
D.cooled to increase viscosity

相关考题

Proper filtering and straining of fuel oil is important...

单项选择题Proper filtering and straining of fuel oil is important because the （）.

A.fuel oil pump will over-speed if dirt is not removed
B.fuel oil transfer pumps cannot tolerate small amounts of dirt in the oil
C.fuel injectors may be damaged by foreign particles in the fuel oil
D.dirty fuel will clog the intake air filter

An automated diesel engine should normally shut down du...

单项选择题An automated diesel engine should normally shut down due to （）

A.low lube oil temperature
B.high ambient air temperature
C.low tube oil pressure
D.high exhaust system back pressure

The minimum speed an engine must attain before ignition...

单项选择题The minimum speed an engine must attain before ignition can occur depends upon （）.

A.the type and size of the engine
B.the condition of the engine
C.ambient temperature
D.all of the above

船舶动力装置

Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.