A.electronic ignition system
B.compression of air by the piston
C.friction in the fuel injector
D.fuel oil bearing system
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A.placed as near the crankpin axis as possible
B.removed each time the crankshaft is repositioned
C.left in place for all four readings
D.reset to zero for all four readings
A.increase engine power
B.increase engine load
C.decrease engine power
D.improve fuel economy
A.compressibility of the fuel
B.high fuel oil supply flow
C.scored plunger and barrel packing
D.excessive air turbulence
A.a restricted air intake
B.a clogged connecting rod oil passage
C.incorrect connecting rod alignment
D.high cylinder firing temperatures
A.a higher cetane number of fuel oil
B.the diesel fuel used having a high viscosity
C.mechanical rigidity in the lube pump mechanism
D.a decrease rigidity in the fuel pump delivery pressure
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（） is not installed on the main switchboar.
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