单项选择题
A.steam stop valve B.dry pipe C.feedwater system D.generating tubes
If the jacket water temperature of an operating diesel ...
单项选择题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
The possibility of damage from operating a diesel engin...
单项选择题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
The air supplied to a diesel engine is compressed to （）...
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
