What could be a result of insufficient lubrication of lifeboat winches and davits ________．A.Moisture accumulation in winch motor damaging the electrical wiringB.Freezing of gears in cold weatherC.Corroding of sheaves on the davits so they will not rotateD.All of the above
What could be a result of insufficient lubrication of lifeboat winches and davits ________．
A.Moisture accumulation in winch motor damaging the electrical wiring
B.Freezing of gears in cold weather
C.Corroding of sheaves on the davits so they will not rotate
D.All of the above
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Restrictions occurring in the small orifices(孔) of pneumatic control system components can be caused by ______.A.moisture in the compressed air supplyB.excessive dryness in the compressed air supplyC.pressure surging in the compressed air receiverD.insufficient lubrication of the system components
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Lifeboat winches on a ship are required to be inspected and an entry made in the logbook. What should this entry include?A.The time required to lower a lifeboatB.The time required to raise a lifeboatC.The date of inspection and condition of the winchD.All of the above
What must the Master or person in charge of a ship enter in the logbook after conducting a boat drill?A.Which survival craft was used in the drillB.The number of each lifeboat not lowered during each drillC.Only the number of each motor propelled lifeboat that is loweredD.The length of time an oar propelled lifeboat is rowed
What is the purpose of the limit switch on gravity davits?A.To cut off the power when the davits hit the track safety stopsB.To stop the davits from going too fastC.To cut off the power when the davits are about 12 inches or more from the track safety stopsD.None of the above
Frapping lines ______．A.secure the lifeboat in the davits when in the stowed positionB.bring the lifeboat close alongside the rail in the embarkation positionC.give the occupants a safety line when the boat is being lowered from the embarkation levelD.reduce the swinging of the lifeboat at the embarkation level
What could result in an incorrect oxygen concentration reading on the oxygen indicator ________．A.Exposure to carbon dioxide for no more than 1 minuteB.Exposure to carbon dioxide for more than 10 minutesC.Exposure to a very low concentration of sulfur dioxide for no more than 2 minutesD.None of the above
Frapping lines are fitted to lifeboat davits to ______.A.secure the lifeboat in the davits when in the stowed positionB.bring the life boat close along the rail in the embarkation positionC.give the occupants a safety line when the boat is being lowered from the embarkation levelD.reduce the swinging of the lifeboat at the embarkation level
单选题What could be a result of insufficient lubrication of lifeboat winches and davits?（）AMoisture accumulation in winch motor damaging the electrical wiringBFreezing of gears in cold weatherCCorroding of sheaves on the davits so they will not rotateDAll of the above
单选题The maximum speed of lowering for a lifeboat on gravity davits is controlled by the（）.Alimit switchesBemergency disconnect switchCgovernor brakeDposition of the counterweight on the brake handle
单选题Increased internal leakage, in addition to poor hydraulic system response,and inadequate lubrication, is the result of （）.Apump bearings in poor conditionBexcessively worn actuator-piston packingCbroken directional control valve centering springsDlow hydraulic oil viscosity
单选题In launching a covered lifeboat，what would safely lower the lifeboat from inside the lifeboat cabin?（）AFrapping lineBTricing lineCRottmer releaseDWinch remote control wire
单选题Insufficient refrigerant in a refrigeration plant may result in （）.Ahigh discharge pressureBfrosting of the crankcaseChigh temperature of the overboard waterDlow suction pressure of compressor
单选题What must the Master or person in charge of a ship enter in the logbook after conducting a boat drill? （）AWhich survival craft was used in the drillBThe number of each lifeboat not lowered during each drillCOnly the number of each motor propelled lifeboat that is loweredDThe length of time an oar propelled lifeboat is rowed
单选题Frapping lines are fitted to lifeboat davits to（）.Asecure the lifeboat in the davits when in the stowed positionBbring the lifeboat close along the rail in the embarkation positionCgive the occupants a safety line when the boat is being lowered from the embarkation levelDreduce the swinging of the lifeboat at the embarkation level
单选题Frapping lines（）.Asecure the lifeboat in the davits when in the stowed positionBbring the lifeboat close alongside the rail in the embarkation positionCgive the occupants a safety line when the boat is being lowered from the embarkation levelDreduce the swinging of the lifeboat at the embarkation level
单选题Crankcase explosions in propulsion diesel result from（）Athe splashing of lubrication oil by the crankshaftBthe dilution of crankcase oil with particles of combustionCbroken fuel lines spraying oil on the crankcaseDthe ignition of unburned fuel and air in the crankcase
单选题Frapping lines are fitted to lifeboat davits to（）.Areduce the swinging of the lifeboat as it is being lowered from the embarkation levelBsecure the lifeboat in the davits when in the stowed positionChold the lifeboat to the ship's side until the tricing lines are passedDbe used as a safety line in an emergency
单选题What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）ASea anchorBSteering oarCSpare rudderDDaggerboard
单选题What should be used to steer an open lifeboat if the rudder becomes lost or damaged?（）ASea anchorBSteering oarCSpare rudderDDagger board
单选题Which statement is TRUE concerning lifeboat gripes?（）AThey must be released by freeing a safety shackleBThey should not be released until the boat is in lowering positionCThey may be adjusted by a turnbuckleDThey are normally used only with radial davits
单选题What is the purpose of the limit switch on gravity davits?（）ATo cut off the power when the davits hit the track safety stopsBTo stop the davits from going too fastCTo cut off the power when the davits are about 12 inches or more from the track safety stopsDNone of the above
单选题Steering a motor lifeboat broadside to the sea could cause it to（）.AcapsizeBrun smootherCrun fasterDsink
单选题Lifeboat winches on a ship are required to be inspected and an entry made in the logbook. What should this entry include? （）AThe time required to lower a lifeboatBThe time required to raise a lifeboatCThe date of inspection and condition of the winchDAll of the above
单选题Which sequence is correct when launching a lifeboat stowed in gravity davits?（）ARelease gripes，turn on emergency disconnect switch，release frapping linesBRelease tricing pennants，turn on emergency disconnect switch，release frapping linesCOperate limit switches，release gripes，lift brakeDRelease gripes，lift brake，release tricing pennants