A.Pre-lube cylinders with hand cranks
B.Open all air space drain cocks
C.Open all indicator valves
D.All of the above
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A.low exhaust temperature
B.low exhaust pressure
C.mechanical knock in each cylinder
D.black or gray exhaust smoke
A.swept volume of the cylinder
B.inside diameter of the cylinder
C.piston displacement in the cylinder
D.length of the piston stroke
A.Advanced ignition
B.Clogged air intake
C.Leaky exhaust valve
D.High exhaust pressure
A.a cylinder air charge of higher pressure
B.increased pumping losses
C.less valve overlap
D.reduced blow-by
A.low exhaust temperature
B.low firing pressure
C.fuel knock in each cylinder
D.mechanical knock in each cylinder
最新試題
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
（） is not installed on the main switchboar.
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The cetane rating of diesel fuel is an indication of the （）
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated（）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
Diesel engine air start system check valves are opened by （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The treatment of the fuel oils involves storage, heating, filtering and（）