单项选择题X 纠错
A.a leaking fuel injection nozzle
B.a clogged air filter
C.early fuel injection
D.burned valves
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单项选择题
A.on the power stroke
B.on the exhaust stroke
C.at the end of the power stroke
D.at the start of the intake stroke
单项选择题
A.early fuel injection timing
B.leaking valves
C.a continuously open scavenge air port
D.low cooling water temperature
单项选择题
A.clogged air filter
B.compression stroke
C.burned exhaust valves
D.all of the above
单项选择题
A.intake stroke
B.compression stroke
C.power stroke
D.exhaust stroke
单项选择题
A.When heated, it will move proportional to the amount the metal has lengthened or expanded
B.The pointer associated with the pyrometer scale can be made to also measure engine RPM
C.It can be utilized in exhaust manifolds and heat exchangers interchangeably
D.It can indicate temperature at a distant point from the source heat
单项选择题
A.Low compression pressure and high exhaust temperature
B.Low firing pressure and high exhaust temperature
C.Low compression pressure and low exhaust temperature
D.Low firing pressure and low exhaust temperature
单项选择题
A.later and close sooner
B.sooner and close later
C.sooner and close sooner
D.later and close later
单项选择题
A.pyrostats and a voltmeter
B.a gas-filled bellows, a tube and a pressure gauge
C.thermocouples and a voltmeter
D.ammeters and thermocouples
单项选择题
A.clogged coolant passages
B.a leaking cylinder head gasket
C.low fuel oil pressure
D.worn or broken cylinder liner sealing rings
单项选择题
A.before TDC and close after BDC
B.after TDC and close after BDC
C.before TDC and close before BDC
D.after TDC and close before BDC