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單項(xiàng)選擇題

The （） of the diesel oil must not exceed 120 degree Fahrenheit.

A.temperature
B.pressure
C.acid value
D.viscosity

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單項(xiàng)選擇題

The （） is not properly set thus causing either advanced or retarded firing.

A.piston
B.fuel injection pump
C.crankshaft
D.oil can

單項(xiàng)選擇題

The （） engine is used for alternators and some times for main propulsion with a gearbox to provide a propeller of between 90 to 120 rpm.

A.four-stroke
B.two-stroke
C.slow speed
D.reversible