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單項(xiàng)選擇題

Turbocharging of marine diesel engine is achieved by two distinct methods, （） termed the constant pressure and the pulse system.

A.respectable
B.respectful
C.respective
D.respectively

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單項(xiàng)選擇題

To start the ejection process the oil feed to the centrifuge is first shut off and the oil remaining in the bowl removed by admitting （）.

A.flashing water
B.operating oil
C.flushing water
D.sealing water

單項(xiàng)選擇題

To prevent the build up of high stresses engine must not be run continuously （）.

A.faster than dead slow speed
B.slower than dead slow speed
C.with the output of MCR
D.at critical speeds