A.many thousand times
B.between times
C.one time
D.at times
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A.temperature
B.viscosity
C.density
D.velocity
A.excessive heat
B.insufficient heat
C.effective cooling
D.high output
A.scale
B.sludge
C.chemicals
D.air
A.turning gear
B.steering gear
C.spur gear
D.chain gear
A.the crosshead
B.the crankshaft
C.large end
D.the piston bosses
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Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
A diesel engine piston ring face is in direct contact with the （）.
The highest pressure in a diesel engine cylinder normally occurs （）.
When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）
The main purpose of the piston oil scraper rings is to （）.
The function of diesel engine piston compression rings is to （）.
What is the function of the thrust bearing?（）
The ability of the governor to prevent fluctuations in engine speed is termed （）.
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.