A.piston crown
B.piston groove
C.piston skirt
D.piston ring belt
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A.craned out
B.rolled out
C.lifted out
D.turned out
A.aluminum-plated
B.bronze-plated
C.zinc-plated
D.chromium-plated
A.must be provided
B.may be provided
C.have provided
D.can be provided
A.has to be cooled
B.has heated
C.has preheated
D.has to be preheated
A.inefficiency
B.oiliness
C.detergency
D.purity
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Proper filtering and straining of fuel oil is important because the （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.
An automated diesel engine should normally shut down due to （）
A diesel engine piston ring face is in direct contact with the （）.
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 （）.
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?（）
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
White smoke exhausting from an operating diesel engine may indicate （）.
The highest pressure in a diesel engine cylinder normally occurs （）.