A.well
B.good
C.excellent
D.respectively
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A.lime
B.frost
C.scale
D.scar
A.scar
B.scale
C.spur
D.bilge
A.continuously
B.regularly
C.constantly
D.period
A.to change the lube oil
B.have the lube oil purified
C.have the lube oil burnt
D.to analyze the lube oil
A.not less than twice
B.greater at least twice than
C.not greater twice than
D.larger three times than
最新試題
In using reduction gears to obtain efficient propeller speeds, （）.
A thrust bearing is used with a propulsion diesel engine to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.
The function of diesel engine piston compression rings is to （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
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?（）
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.