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
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
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 （）.
Diesel engine control can be obtained by the bridge （）.
Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
Routine monitoring of a diesel engine should include （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
An automated diesel engine should normally shut down due to （）