The __________ must be circulated between moving engine parts to prevet metal-to-metal contact.
A: coolant
B: fuel
C: engine oil
D: water
A: coolant
B: fuel
C: engine oil
D: water
举一反三
- Which statement about the Lubrication oil is fault? A: The oil absorbs and carries the heat away from the engine components. B: The oil forms a good seal between piston rings and cylinder walls. C: The oil forms a film on the metal surface and prevents a metal to metal contact. D: The oil washes off dirt away from the engine parts through its chemistry.
- If there is water in fuel oil， the revolution of the engine will （）.
- What serves as a rigid metal foundation for all parts of an engine?<br/>() A: The engine block B: camshaft C: clutch D: crankshaft
- To be effective, an engine lubricating system must successfully perform the following tasks:_____, _____, and _____. A: minimizing friction between the bearing surfaces of moving parts B: dissipating heat C: keeping the engine parts clean by removing carbon and other foreign matter
- Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?（） A: Water discharging from the water outlet of the lube oil purifier B: Fuel oil discharging from the water outlet of the lube oil purifier C: Lube oil discharging from the water outlet of the lube oil purifier D: A change in the lube oil viscosity