In a trunk engine the cylinder lubrication is done by the oil mist thrown up by_____ ()

[单选题]Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during （）.A . the power strokeB . the compression strokeC . low load operation onlyD . periods of standby

Cylinder lubrication oil for low speed main propulsion diesel engines is admitte

[单选] In a bypass type lubrication system for a diesel engine， the dirty oil line

[单选题]The oil quantity for bearing lubrication should be applied in such an amount as to be sufficient to carry away the （） caused by the friction at the bearings.A . acidsB . additivesC . heatD . gear

[单选题]Oil pressure in the lubrication system is （） the static sea water head to ensure that sea water （） the stem-tube.A . lower than；can lubricateB . lower than；can coolC . higher than；can enterD . higher than ；cannot enter

[单选题]Oil is supplied to the cylinder wall and （） by means of mechanical lubricators.A . the cylinder coverB . the piston ringsC . the piston crownD . the piston skirt

[单选题]In addition to lubricating, cylinder oil assists in forming a gas seal and contains （） which clean the cylinder liner.A . additivesB . waterC . greaseD . acid solutio

[单选题]The rate of cylinder lubricating oil metered to each cylinder of a large low-speed main propulsion diesel engine is （）A . the same, whether at sea, or during maneuveringB . adjusted during each hour of operation while at constant RPMC . higher at sea

[单选题]In some designs the cylinder oil is timed so that the oil injects only on the （）.A . piston crownB . piston grooveC . piston skirtD . piston ring belt

[单选题]In a diesel engine, excessive cylinder liner wear will cause （）(1) increased blow-by(2) wear between the piston ring and grooveA . (1) only is correctB . (2) only is correctC . both (1) and (2) are correctD . neither (1) or (2) axe correct