Due to _____ action of pistons some relative motion between parts in contact in the coolant supply and return system must occur.
举一反三
- The __________ must be circulated between moving engine parts to prevet metal-to-metal contact. A: coolant B: fuel C: engine oil D: water
- A __________ changes the up-and-down motion of the pistons into spinning motion.
- 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
- It is held in the crankcase in the cylinder block and converts the reciprocating motion of the pistons into a rotary motion for the drive wheels.
- in designing a logistic system, a delicate balance must be maintained between the cost and .