單項選擇題

If the jacket water temperature of an operating diesel engine suddenly rises above normal, the cause can be attributed to （）.

A.an overfilled expansion tank
B.excess chromate treatment of the jacket water
C.a clogged raw water sea suction
D.cavitation erosion of the heat exchanger tubes

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單項選擇題

The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of（）.

A.an isochronous governor
B.elastic engine mounts
C.a vibration damper
D.a cast iron bed plate with good flexible qualities

單項選擇題

The air supplied to a diesel engine is compressed to （）
(1) provide heat for the ignition of the fuel
(2) decrease injection delay

A.(1) only is correct
B.(2) only is correct
C.both (1) and (2) are correct
D.neither (1) or (2) are correct

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If the jacket water temperature of an operating diesel engine suddenly rises above normal, the cause can be attributed to （）.

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The possibility of damage from operating a diesel engine at critical speeds is reduced by the use of（）.

The air supplied to a diesel engine is compressed to （） (1) provide heat for the ignition of the fuel (2) decrease injection delay

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The air supplied to a diesel engine is compressed to （）
(1) provide heat for the ignition of the fuel
(2) decrease injection delay