A large, low-speed, main propulsion diesel engine uses sea water to directly cool the （）.

[单选题]Mist detectors used on large low-speed main propulsion diesel engines monitor and check for the presence of （）.A . fuel oil vapor at the sludge tank ventB . unburned fuel vapors in the scavenge air receiverC . lube oil vapors in the crank caseD . lub

[单选题]In a large, slow-speed, main propulsion diesel engine, which of the parts listed is under tension when the engine is running?（）A . Bed plateB . ColumnC . EntablatureD . Tie rod

[单选题]All marine low-speed diesels are of what design?（）A . Four-strokeB . Two-strokeC . Electronic ignitionD . Forced exhaust

[单选题]One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.A . the extra weight required for the diesel reduction gearingB . a minimum speed for the engines that limits the minimum speed of the vesselC . the highe

[单选题]On a medium-speed main propulsion diesel engine, the crank-pin or crank journalbearings receive lubricating oil from( ).A．a spindle lubricatorB．an oil jetC．internal splashingD．drilled passages in the crankshaft

[单选题]On a medium-speed main propulsion diesel engine, the crank-pin or crank journal bearings receive lubricating oil from （）.A . a spindle lubricatorB . an oil jetC . internal splashingD . drilled passages in the crankshaft

[单选题]Large, two-stroke/cycle, main propulsion, diesel engine cylinders can be successfully pressure charged during normal operation, by using the （）.A . exhaust gas temperature systemB . exhaust load systemC . constant or pulse pressure systemD . constant

[单选题]In low - speed network ,it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down. In high - speed networks, this approach often works poorly, because in the(71)between sending the notif

[单选题]In a main propulsion turbocharged diesel engine, the speed of the turbocharger varies according to the _____.A．governor droopB．speeder spring tensionC．fuel rack lagD．load on the engine

[单选题]In low-speed network,it is usually adequate to wait for congestion to occur and then react to it by telling the source of packets to slow down．In high-speed networks, this approach often works poorly, because in the (71) between sending the notificat