A.good lubrication
B.low thermal stress
C.good mechanical properties
D.acid corrosion
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A.for starting diesel engines
B.in pneumatic control system
C.in pneumatic tools
D.All the above are true
A.the air receivers
B.the starting valves
C.the cylinder covers
D.the distributors
A.machine efficiency
B.machinery efficiency
C.mechanical efficiency
D.mechanics efficiency
A.to need
B.ready for
C.want to
D.going to be
A.water
B.fresh air
C.fuel oil
D.gas
最新試題
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
In a simple mechanical governor, the （）.
Diesel engine control can be obtained by the bridge （）.
Routine monitoring of a diesel engine should include （）.
The ability of the governor to prevent fluctuations in engine speed is termed （）.
If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
The function of diesel engine piston compression rings is to （）.
When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.
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 （）.
Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.