A.once every crankshaft revolution
B.once every two crankshaft revolutions
C.once every piston stroke
D.twice every piston stoke
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A.entirely constant pressure
B.entirely constant temperature
C.a combination of constant volume and constant pressure
D.a combination of constant temperature and constant pressure
A.spring force
B.hydraulic pressure
C.centrifugal force
D.mechanical linkage
A.maintaining a constant rack setting
B.storing kinetic energy
C.maintaining equal exhaust pressure
D.maintaining even camshaft speed
A.After every trip
B.Every 4000 hours
C.According to manufacturer’s instructions
D.Every time they are shutdown
A.prevent excessive cylinder liner wear
B.reduce friction losses in the engine
C.seal the space between the piston and the liner
D.limit upward flow of lube oil into the combustion space
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