A.the common ground point
B.the starter’s frame
C.the commutator
D.the starter’s mounting bolts
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A.flame retardant
B.moisture resistant
C.oil resistant
D.low conductivity
A.Ring type
B.Fork type
C.Spade type
D.Push on pull off type
A.metal
B.wood
C.water
D.plastic
A.Stray current
B.Rated current
C.Starting current
D.Earth current
A.pump
B.the cylinder
C.the hunting gear
D.the rudder
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During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Using a file without a handle may result in （）
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（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The treatment of the fuel oils involves storage, heating, filtering and（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
Engine parameters shall be corresponded to NOx Technical Files. This is required by （）
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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