單項(xiàng)選擇題

Which of the engine components listed increases air charge density and helps to improve engine operating efficiency?（）

A.Intake manifold
B.Water-cooled exhaust system
C.After-cooler
D.Exhaust diffuser

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A diesel engine will lose power if fuel injection occurs too early because the （）

A.fuel will not be properly atomized in the cylinder
B.ignition will be delayed due to low ignition temperature
C.maximum fuel expansion will occur on the compression stroke
D.fuel will ignite before top dead center

單項(xiàng)選擇題

The air supplied to the cylinders by a turbocharger is often reduced in volume by a/an （）

A.air compressor
B.diffuser
C.after-cooler
D.ventilator

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Which of the engine components listed increases air charge density and helps to improve engine operating efficiency?（）

你可能感興趣的試題

A diesel engine will lose power if fuel injection occurs too early because the （）

The air supplied to the cylinders by a turbocharger is often reduced in volume by a/an （）