A.play a great part on
B.run a role in
C.plays an important part in
D.acts as important part at
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A.an oil seal
B.removing heat
C.a gas seal
D.cooling the piston
A.ignition ratio
B.power ratio
C.compression ratio
D.injection ratio
A.nip
B.nap
C.gap
D.lip
A.less than
B.lighter than
C.larger than
D.smaller than
A.less than
B.lighter than
C.larger than
D.smaller than
最新試題
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?（）
Proper filtering and straining of fuel oil is important because the （）.
Diesel engine control can be obtained by the bridge （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
The highest pressure in a diesel engine cylinder normally occurs （）.
The main purpose of the piston oil scraper rings is to （）.
Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
A diesel engine piston ring face is in direct contact with the （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.