单项选择题X 纠错
A.indicates the amount of abrasive material in the fuel
B.affects the starting ability of a cold engine
C.determines the amount of fuel penetration engine
D.affects the compression ratio of an operating engine
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单项选择题
A.dial indicator
B.outside caliper
C.bridge gauge
D.tram rod
单项选择题
A.telescoping
B.ring ‘snap’ gauge
C.inside vernier caliper
D.outside micrometer
单项选择题
A.cetane number
B.volatility point
C.viscosity index
D.octane number
单项选择题
A.specific gravity
B.cetane number
C.viscosity
D.calorific valve
单项选择题
A.Leaking seal ring
B.Insufficient heat transfer from the exhaust valves
C.Block cooling water passages to the head
D.Excessive scavenging air provided to the engine
单项选择题
A.ignition quality of the fuel
B.calorific value of the fuel
C.flash point of the fuel
D.rate of fuel consumption
单项选择题
A.Viscosity
B.acid content
C.heating value
D.ignition quality
单项选择题
A.Viscosity
B.Sulfur content
C.Pour point
D.Cetane number
单项选择题
A.Exhaust energy would draw excess air
B.The inertia of the turbocharger rotor causes a time lag which delays the turbocharger speed increase
C.Exhaust gas pumping losses are increased due to turbine windage
D.Exhaust gas back pressure falls slightly due to increased nozzle action
单项选择题
A.use of low viscosity oil in cold weather
B.increased moisture content of inlet air in cold weather
C.increased drag of pistons and bearings due to increased oil viscosity
D.higher compression pressures reached due to smaller clearances existing in the engine during cold weather