A.in order to
B.because of
C.so that
D.so as to
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A.play a great part on
B.run a role in
C.plays an important part in
D.acts as important part at
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
最新試題
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
The function of diesel engine piston compression rings is to （）.
A thrust bearing is used with a propulsion diesel engine to （）.
A diesel engine piston ring face is in direct contact with the （）.
In a simple mechanical governor, the （）.
An automated diesel engine should normally shut down due to （）
If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）