A.natural aspiration
B.masked intake valves
C.air cells
D.scavenging air
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A.excessive lube oil consumption
B.lower than normal lube oil temperature
C.higher than normal exhaust back pressure
D.excessive crankshaft end play
A.twice as large as with a cast iron piston
B.the same size as with a cast iron piston
C.half as large as with a cast iron piston
D.the same size as the crown of an aluminum piston
A.increase back pressure during the exhaust process
B.facilitate periodic replacement of the valves
C.reduce the pumping loss associated with scavenging
D.reduce tension on valve springs
A.excessive ring action
B.excessive ring temperature
C.improper ring rotation
D.excessive ring face wear
A.higher speed required
B.flywheel-effect
C.lower starting temperatures
D.higher compression pressures
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When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
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For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
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