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單項(xiàng)選擇題

The speed of the turbocharger for a four-stroke/cycle diesel engine driving a generator at constant speed depends on the （）

A.engine speed
B.kilowatt load
C.fuel injection pressure
D.air intake manifold temperature

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單項(xiàng)選擇題

The operating speed of a turbocharger is directly dependent upon（）

A.engine speed
B.engine load
C.intake manifold pressure
D.atmospheric pressure

單項(xiàng)選擇題

A four-stroke/cycle, 1000horsepower diesel engine fails to start at normal cranking speed with normal fuel pressure and ambient temperatureThe reason for the failure could be（）

A.glazed liners or pistons
B.high lube oil pressure
C.excessive compression ratio
D.worn valve seats and valves

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