A.inside
B.before
C.after
D.against
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A.gap
B.clearance
C.radius
D.stroke
A.to interfere with
B.interfering with
C.to help scavenging
D.helping scavenging
A.to interfere with
B.interfering with
C.to help scavenging
D.helping scavenging
A.a starting system
B.the starting air
C.a starting operation
D.A, B and C
A.air bottle
B.air compressor
C.crank case
D.combustion chamber
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In using reduction gears to obtain efficient propeller speeds, （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.
If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.
The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.
The main purpose of the piston oil scraper rings is to （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.
Diesel engine control can be obtained by the bridge （）.
Maximum horsepower of a diesel engine is attained （）.