單項選擇題

A turbocharged diesel engine will have an intake manifold pressure（）

A.constantly decreasing as engine load increase
B.constantly increasing as the amount of supercharging increases
C.approximately equal to exhaust manifold pressure at all times
D.approximately equal to atmospheric pressure at all times

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單項選擇題

A leaking diesel engine fuel injector will cause（）

A.prolonged maintenance intervals
B.improved atomization
C.greater fuel economy
D.incomplete combustion

單項選擇題

The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually（）

A.greater than the average exhaust manifold pressure
B.less than the average exhaust manifold pressure
C.greater at the turbine wheel than at the impeller
D.greater at reduced engine speed

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A turbocharged diesel engine will have an intake manifold pressure（）

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A leaking diesel engine fuel injector will cause（）

The relative air pressure in the inlet manifold of a turbocharged diesel engine is usually（）