combustion gas blow-by
excessive lubrication
properly functioning rings
insufficient cylinder cooling
第1题：
Low compression in a diesel engine could be caused by
A.worn or broken cylinder liner sealing rings
B.high cooling water temperature
C.worn or broken piston rings
D.low fuel oil pressure
第2题：
class Mineral { static String shiny（） { return "1"； } } class Granite extends Mineral { public static void main（String [] args） { String s = shiny（） + getShiny（）； s = s + super.shiny（）； System.out.println（s）； } static String getShiny（） { return shiny（）； } } 结果为：（）
第3题：
An efficient seal between the cylinder block and cylinder heads on many diesel engines is obtained with________.
A.graphite packing
B.sealing compound
C.lubricating oil
D.gaskets
第4题：
starting the engine while hot
knurling the piston skirt
operating the engine overheated
scuff resistant piston rings
第5题：
2.5 times as bright as a second magnitude star
3 times as bright as a second magnitude star
5 times as bright as a second magnitude star
10 times as bright as a second magnitude star
第6题：
下列关于Insert Surfaces命令说法正确的是（）。
第7题：
下列关于Align Surfaces[对其曲面]命令的描述中，正确的是（）。
第8题：
If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the
A.fuel line connections to the cylinder injection valves
B.gasket surfaces of the fuel oil filters
C.discharge fittings of the fuel injector pumps
D.suction side of the fuel oil transfer pump
第9题：
Change Mr. Bright’s account type
Provide Mr. Bright new checks at no cost
Give Mr. Bright another chance
Alert Mr. Bright prior to charging more fees
第10题：
lube oil pumping
rotating rings
gas pressure behind the ring
passage of hot gases