Which type of davit is not considered to be a mechanical davit ________．A.Sheath-screw boomB.RadialC.CrescentD.Quadrantal
Which type of davit is not considered to be a mechanical davit ________．
A.Sheath-screw boom
B.Radial
C.Crescent
D.Quadrantal
相关考题：
While cranking out a quadrantal davit，slippage of the quadrant due to excessive wear or failure of the teeth in the quadrant will cause the ______．A.Davit arm to pivot on the traveling nut and the head to fall outboardB.Traveling nut to lock up in place on the worm gearC.Limit switch to engage and hold the traveling nut in positionD.Winch brake to lock in position and prevent lowering the boat
The most common type of davit found on merchant vessels today is the ______．A.RadialB.Sheath-screwC.GravityD.Quadrantal
Which davit type may be operated by one man ________．A.QuadrantalB.GravityC.Sheath-screwD.Radial
If a davit-launched life raft aboard a vessel cannot be launched because of damage to the davit, you should ______.A.inflate the life raft on deckB.roll the life raft over the sideC.go to another life raft stationD.get a saw and cut the life raft free
Start the （）(艇机), drive the boat from the ship quickly.A、boat engineB、davit motorC、main engineD、fire boat
When selecting a Network Interface Card (NIC), which of the following factors need to be considered?（）A、The type of application used on the networkB、The type of system bus used by the computersC、The type of memory installed in each computerD、The type of media used in the network topologyE、The type of protocols used in the networkF、The physical layout of the network hosts
Which of the following should be considered when upgrading memory？ （）A、speed of memoryB、memory slot colorC、type of memoryD、CPU speedE、BIOS version
单选题A mechanical davit is designed to automatically（）.Aposition the boat at the embarkation stationBlift the boat off the inboard chocksCenergize the winch for the fallsDset the brake on the winch
单选题The davit aboard a ship is used to（）.Alower personnel down by a transfer basketBlower food and water to personnel in a life raftClower the life raft down with its full complementDmove equipment around the deck
单选题After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.Ahoist manBlimit switchCbrake handleDpreventer bar
单选题On which type davit does the davit head stay at the same height?（）ARadialBSheath-screwCQuadrantalDGravity
单选题The boat is stowed on the davit rather than on a cradle with which type of davit?（）ACrescentBSheath-screw boomCQuadrantalDRadial
单选题The type of davit on which you must turn a crank in order to swing the lifeboat out over the ship’s side is a（）.Asheath-screw davitBgravity davitCradial davitDbruckner davit
单选题Prior to boarding from a vessel，a davit-launched liferaft should be well ventilated of excess（）.Ahydrocarbon gasBcarbon monoxide gasCcarbon dioxide gasDfreon gas
单选题If a davit-launched life raft aboard a vessel cannot be launched because of damage to the davit，you should（）.Ainflate the life raft on deckBroll the life raft over the sideCgo to another life raft stationDget a saw and cut the life raft free
单选题If a davit-launched liferaft aboard a ship cannot be launched because of damage to the davit，you should（）.Ainflate the liferaft on deckBroll the liferaft over the sideCgo to another liferaft stationDget a saw and cut the liferaft free
单选题When hoisting a boat on gravity type davits using an electric motor driven winch，the davit arms should be brought up（）.Ato their final position with the winch operating at slow speedBto the bar stop，and then hand cranked to their final positionCuntil just before they make contact with the limit switch，and then hand cranked to their final positionDto the embarkation deck，and then hand cranked to their final position
单选题Many sheath-screw davits have markings to indicate the maximum angle to which they should be cranked out. If the angle is exceeded，the davit（）.Amay jam against the stopsBwill not automatically position the boat at the embarkation stationCscrew may come out of the sheathDwill chafe against the falls and may cause their failure
单选题The davit launched life raft can be boarded（）.Afrom the water onlyBat the deckCby jumping down onto itDthrough the escape tube
单选题What is required to launch a boat stowed in a crescent davit?（）AHoist the boat clear of the cradleBRelease the outboard part of the cradleCRig the tricing linesDCrank the crescent out
多选题When selecting a Network Interface Card (NIC), which of the following factors need to be considered?（）AThe type of application used on the networkBThe type of system bus used by the computersCThe type of memory installed in each computerDThe type of media used in the network topologyEThe type of protocols used in the networkFThe physical layout of the network hosts
单选题Each open lifeboat carried on a vessel on an international voyage must have（）.Ahand-propelling gearBa davit span with at least 2 lifelinesCa mast and a sailDa motor
单选题On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.Akeep the movement of the davits at the same speedBkeep the davits from slipping when they are in the stowed positionCprevent vibration during lowering of the boatDsupport the manropes
单选题When launching a lifeboat in the rough sea, the davit gears should be released（）.Abefore the boat is lowered from the stowed positionBas the boat fall blocks break clear of the davit headCbefore the boat is lowered from the embarkation levelDafter the boat is released into the water
单选题What is TRUE concerning frapping lines?（）AThey are used to steady a lifeboat when loweredBThey are normally attached to the davit spanCThey are needed only on radial davitsDThey are used to clear the puddings