In four strokes engine, the cycle of events is completed in four strokes of （）.

[单选题]If a four-stroke/cycle diesel engine is running at 1550 RPM, the speed of the camshaft will be（）.A . 525 RPMB . 775 RPMC . 1550 RPMD . 1800 RPM

[单选题]In a four-stroke/cycle diesel engine, the camshaft rotates at （）A . twice the crankshaft speedB . half the crankshaft speedC . the same speed as that of the crankshaftD . a speed independent of that of the crankshaft

[单选题]The four strokes are called suction, compression, expansion and exhaust, but only （） stroke provides the power to drive the ship.A . suctionB . compressionC . expansionD . exhaust

[单选题]Four strokes consist of suction, compression, （） and exhaust stroke.A . combustionB . condensationC . chargingD . evaporatio

[单选题]The working cycle of a four-stroke diesel engine consists of four events:（）(1) compression(2) expansion(3) exhaust(4) suctionThe correct sequence isA . (4)-(2)-(3)-(1)B . (4)-(3)-(1)-(2)C . (4)-(3)-(2)-(1)D . (4)-(1)-(2)-(3)

[单选题]Scavenging in a four-stroke/cycle diesel engine occurs during the （）.A . last part of the exhaust stroke, and the first part of the intake strokeB . last part of the intake stroke onlyC . early part of the injection stroke onlyD . early part of the p

[单选题]If fuel injection to a four-stroke/cycle diesel engine begins earlier than designed, ignition may be delayed because the （）.A . cylinder compression pressure may not be high enoughB . cylinder compression temperature may be too highC . fuel oil injec

[单选题]The camshaft on a four-stroke/cycle diesel engine provides a means to operate the （）.A . fuel injectorsB . exhaust valvesC . intake valvesD . all of the above

[单选题]The four-stroke engine is used for （） and sometimes for main propulsion with a gearbox to provide a propeller speed of between 90 to 120 rev/min.A . alternatorB . turbo-chargerC . remote controllerD . windla

[单选题]In the four-stroke engine, it takes （） to make one power stroke.A . one propulsionB . two propulsionsC . two revolutionsD . one revolutio