单项选择题X 纠错
A.a restricted air intake
B.a clogged connecting rod oil passage
C.incorrect connecting rod alignment
D.high cylinder firing temperatures
你可能喜欢
单项选择题
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
单项选择题
A.Higher compression ratios create higher temperature
B.Higher temperatures create higher compression ratios
C.low temperatures create higher compression ratios
D.Higher compression ratios create low temperatures
单项选择题
A.torque wrench
B.monkey wrench
C.pipe wrench
D.slugging wrench
单项选择题
A.Electric
B.Hydraulic
C.Air
D.All of the above
单项选择题
A.build up the piston crown by metal spraying
B.build up the cylinder head by metal spraying
C.insert shims between the crankpin bearing box and the connecting rod foot
D.install a thinner head gasket
单项选择题
A.cetane number of 55
B.cetane number of 45
C.octane number of 55
D.octane number of 45
单项选择题
A.increase
B.decrease
C.remain the same
D.increase on compression decrease on expansion
单项选择题
A.ignition quality of the fuel
B.high heating value of the fuel
C.amount of carbon residue after combustion
D.internal flow resistance in the injectors
单项选择题
A.has little or no internal friction
B.has a lower effective compression ratio
C.operates with scavenge air under a positive pressure
D.operates without energy absorbing intake and exhaust strokes
单项选择题
A.Decreased connecting rod bearing clearance
B.Increased connecting rod bearing clearance
C.Decreased compression ratio
D.Increased compression ratio