________is the most visible signal of distress from a lifeboat at sea in the daytime.A.Smoke signalB.Flash signalC.Fire signalD.Radio emergency transmission
________is the most visible signal of distress from a lifeboat at sea in the daytime.
A.Smoke signal
B.Flash signal
C.Fire signal
D.Radio emergency transmission
相关考题：
When using a hand held smoke signal from a lifeboat, you should activate the signal _____.A.on the downwind sideB.on the upwind sideC.inside the boatD.at the stern
What is the most appropriate action for a GMDSS radio operator to take in a distress situation where immediate help is needed，but the vessel is not sinking nor needs to be abandoned ________．A.Switch off EPIRB and SART manuallyB.Transmit distress call by MF/HF，VHF or INMARSATC.Notify the RCC（Rescue Coordination Center）through VHF FM on channel 13D.Transmit distress call by activating the radiotelegraph automatic alarm signal
An orange flag showing a black circle and square is a ______.A.signal indicating a course changeB.distress signalC.signal of asking to communicate with another vesselD.signal indicating danger
The most suitable mode of transport for the goods which have to be moved by a vessel from a port in one country to a port in another country and then by rail to a second port city in the second country is （）.A、mini-bridgeB、sea trainC、sea/airD、piggyback
单选题Releasing oil from the sea anchor of a lifeboat may（）.Akeep the propeller from being fouledBincrease propeller speedChelp calm the waves in the vicinity of the craftDincrease the holding power of the sea anchor
单选题A yellow signal，floating in the air from a parachute，about 300 feet above the water，indicates that a submarine（）.Awill be coming to periscope depthBwill be coming to the surfaceCis on the bottom in distressDis in distress and will try to surface
单选题A person has fallen overboard and is being picked up with a lifeboat. If the person appears in danger of drowning，the lifeboat should make（）.Aan approach from leewardBan approach from windwardCthe most direct approachDan approach across the wind
单选题From IMO’S point of view, INMARSAT’s most important function is the provision of（）.Ageneral radio communicationBMSICimproved distress and safety communicationDbridge-to-bridge communication
单选题（）is the most visible signal of distress from a lifeboat at sea in the daytime.ASmoke signalBFlash signalCFire signalDRadio emergency transmission
单选题What would most likely prevent a SART’s signal from being detected?（）ASignal absorption by the ionosphereBHeavy sea swellsCThe rescue personnel were monitoring the 10-cm radarDThe rescue personnel were monitoring the 3-cm radar
单选题One of the signals，other than a distress signal，that can be used by a vessel to attract attention is a(n)（）.Ared star shellBsearchlightCburning barrelDorange smoke signal
单选题A vessel is approaching from dead ahead． Both of her sidelights are visible and her range lights are in line. Which of the following could you do first?（）.ASound one blast of the whistleBAlter course to starboardCConstruct a radar plotDSound the danger signal
单选题Which is NOT a distress signal? （）AA continuous sounding with any fog signal apparatusBA signal sent by radiotelephone consisting of the spoken word MaydayCAn International Code Signal of N.C.DThe firing of green star rockets or shells
单选题A distress signal（）.Aconsists of 5 or more short blasts of the fog signal apparatusBconsists of the raising and lowering of a large white flagCmay be used separately or with other distress signalsDis used to indicate doubt about another vessel's intentions
单选题Which is a distress signal? （）AA triangular flag above or below a ballBThe International Code Signal of distress indicated by JVCA green smoke signalDFlames on the vessel as from a burning tar barrel
单选题What would NOT be a distress signal?（）AMAYDAY sent by radiotelephoneBContinuous sounding of fog hornCGreen star shells fired from a launcherDSquare flag and ball in a vertical line
单选题Which signal is recognized as a distress signal?（）.ADirecting the beam of a searchlight at another vesselBA smoke signal giving off orange colored smokeCA whistle signal of one prolonged and three short blastsDInternational Code Signal PAN spoken over the radiotelephone
单选题（）process the distress signal from EPIRB to determine its position and identity.ACOSPAS-SARSATBGround receiving stationsCstoring distress signalDNear-polar orbiting satellites
单选题（）sends a radio signal from the bottom of the ship to the sea-bed,from which it is reflected.AThe marine sextantBThe chronometerCThe echo sounderDThe radar
单选题A RADIO SIGNAL FROM A DISTRESSED VESSEL AUTOMATICALLY DIRECTED TO A RCC GIVING POSITION，IDENTIFICATION，COURSE AND SPEED OF THE VESSEL AS WELL AS THE NATURE OF DISTRESS is known as（）.ADistress alertBSafety alertCEmergency alertDGeneral alert
单选题A distress signal（）.Aconsists of 5 or more short blasts of the fog signal apparatusBconsists of the raising and lowering of a large white flagCmay be used individually or in conjunction with other distress signalsDis used to indicate doubt about another vessel's intentions
单选题Which is NOT a distress signal?（）AA continuous sounding with any fog signal apparatusBA signal sent by radiotelephone consisting of the spoken word MaydayCAn International Code Signal of N.CDThe firing of green star rockets or shells
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（）process the distress signal from EPIRB to determine its position and identity.ACOSPAS-SARSATBground receiving stationsCstoring distress signalDNear polar orbiting satellites
单选题What is NOT a distress signal?（）AA continuous sounding of the fog hornBFiring a gun every minuteCFive or more short rapid blasts on the whistleDA square flag and ball flown from the mast
单选题For COAPAS-SARSAT system,（）process the distress signal from EPIRB to determine its position and identity.ACOSPAS-SARSATBground receiving stationsCspacecraftDsatellite SAR instrument
单选题Steering a motor lifeboat broadside to the sea could cause it to（）.AcapsizeBrun smootherCrun fasterDsink