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單項(xiàng)選擇題

The ability of a fuel particle to travel into the combustion chamber before burning is called （）.

A.penetration
B.permanence
C.turbulence
D.atomization

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單項(xiàng)選擇題

Proper atomization of fuel in diesel engine combustion chambers will （）.

A.affect the injection pressure
B.improve combustion
C.reduce compression pressure
D.decrease power output

單項(xiàng)選擇題

All of the diesel engine cylinder firing pressures are normal, yet all of the exhaust temperatures are lowWhich of the following situations is responsible for this condition?（）

A.Excessively early injection timing
B.Combustion knock
C.Leaking piston rings
D.Light load

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