A.crankshaft revolution
B.mechanical cycle of operation
C.period of two combustion cycles
D.cycle of two events
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A.control rack
B.delivery valve
C.governor speed
D.plunger crossbar
A.penetration
B.permanence
C.turbulence
D.atomization
A.affect the injection pressure
B.improve combustion
C.reduce compression pressure
D.decrease power output
A.Excessively early injection timing
B.Combustion knock
C.Leaking piston rings
D.Light load
A.Combustion does not begin until the piston starts down on the power stroke
B.Maximum combustion pressure is reached before TDC
C.Turbulence in the cylinder causes a delay in ignition
D.Maximum cylinder firing pressure is not developed until the piston passes TDC
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Maximum horsepower of a diesel engine is attained （）.