单选题Distress signals may be（）.Ared flaresBsmoke signalsCsound signalsDAny of the above
单选题
Distress signals may be（）.
A
red flares
B
smoke signals
C
sound signals
D
Any of the above
参考解析
解析：
暂无解析
相关考题：
One of the signals, other than a distress signal, that can be used by a rescue boat to attract attention is a/an ______.A.red star shellB.searchlightC.burning barrelD.orange smoke signal
A vessel may use any sound or light signals to attract the attention of another vessel as long as ______.A.white lights are not usedB.red and green lights are not usedC.the signal cannot be mistaken for a signal authorized by the RulesD.the vessel signals such intentions over the radiotelephone
Which categories of NAVTEX messages may not be selectively rejected through receiver programming ________．A.Navigational warningsB.Weather warningsC.SAR and distress alert informationD.All of the above
What is meant by the term“radio silence”________．A.Stations not directly involved with the on-going distress communications may not transmit on the distress frequency or channelB.Stations remaining off the air to safeguard proprietary informationC.Two three-minute silent periods，at 15 and 45 minutes after the hour，that provide a transmitting“window”for distressed vessels to transmit distress alerts using J3ED.Communications on a distress frequency or channel is banned for 24 hours following the cessation of the distress traffic
Nerve signals may travel through nerve or muscle fibers at speeds as high as two hundred miles per hour.A:velocities B:impulsesC:ratios D:atrocities
海岸电台的MF/HF/VHF的电话业务可在那一卷（）无线电信号书中查找。A、MARITIME RADIO STATIONB、GLOBAL MARITIME DISTRESS AND SAFETY SYSYTEMC、MATITIEM SAFETY INFORMATION SERVICESD、LIST OF RADIO SIGNALS
单选题A vessel may use any sound or light signals to attract the attention of another vessel as long as（）.Awhite lights are not usedBred and green lights are not usedCthe signal cannot be mistaken for a signal authorized by the RulesDthe vessel signals such intentions over the radiotelephone
单选题If no distress acknowledgement is received（）a DSC distress call transmission, then the ship in distress may repeat the DSC distress call attempt after a delay of between 3.5 and 4.5 minutes from the beginning of the initial call.Arelevant toBrelate toCin response toDin relation to
单选题Distress flares and smoke signals for small passenger vessels（）.Aare not required aboard vessels on runs of less than 30 minutes durationBmust be Coast Guard approved and stowed in a portable，watertight containerCmust be marked with an expiration date not more than 42 months from the date of manufactureDAll of the above
单选题Why should the SES operators be very careful when the ship enters the area where three ocean regions overlap? Because（）.Athe weather is always terribleBthe condition there is complicatedCthe signals are too strongDtheir SES may receive the signals from unwanted satellite
单选题All of the following are distress signals under the Rules EXCEPT（）.AInternational Code Signal AABorange-colored smokeCred flaresDthe repeated raising and lowering of outstretched arms
单选题All of the following are recognized distress signals under the Navigation Rules EXCEPT（）.Aa green star signalBorange-colored smokeCred flaresDthe repeated raising and lowering of outstretched arms
单选题The service life of distress signals must be not more than（）.Aforty two months from the date of manufactureBthirty six months from the date of the last inspectionCtwenty four months from the date of approvalDtwelve months from the date of purchase
单选题On every vessel，distress signals must be stowed（）.Aon or near the navigating bridgeBon the flying bridge not closer than 15 feet to any bulkheadCabove the freeboard deck away from heatDin an enclosed space below the freeboard deck away from heat
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In the COSPAS-SARSAT system distress signals are processed by（）and the resulting data are forwarded to（）through（）communication network.AMCC/LUT/RCCBLUT/MCC/RCCCLUT/RCC/MCCDLUT/RCC/LUT
单选题What following is not among the functions of SOLAS ships?（）Areceive shore-to-ship distress alertingBtransmit ship-to-shore distress alertingCreceive message for public correspondenceDtransmit and receive locating signals
单选题By regulation，orange smoke distress signals will expire not more than how many months from the date of manufacture?（）A24 monthsB36 monthsC42 monthsD54 months
单选题Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）AIf no answer is received on the designated distress frequencies，repeat the distress call on any frequency availableBChannel 16 (156.8) may be used for distress messagesCIt is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds durationDDistress messages should first be transmitted on 2182 kHz
单选题The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）A12 hand red flaresB12 rocket parachute flaresC12 hand combination flares and orange smoke signalsD6 hand red flares，and 6 hand orange smoke signals
单选题Uncharted lights, fog signals and radar beacon transmissions may be（）near the station.AencounteredBmetCcontactedDseen
单选题Which categories of NAVTEX messages may not be selectively rejected through receiver programming?（）ANavigational warningsBWeather warningsCSAR and distress alert informationDAll of the above
单选题What is meant by the term “radio silence”?（）AStations not directly involved with the on-going distress communications may not transmit on the distress frequency or channelBStations remaining off the air to safeguard proprietary informationCTwo three-minute silent periods，at 15 and 45 minutes after the hour，that provide a transmitting window for distressed vessels to transmit distress alerts using J3EDCommunications on a distress frequency or channel is banned for 24 hours following the cessation of the distress traffic
单选题The radiotelegraph alarm signal may be used to announce（）.Athat a distress message will followBa request for assistance in searching for a man overboardCan urgent warning about a cycloneDAll of the above
单选题why should the SES operators be very careful when the ship enters the area where three ocean regions overlap? Because（）.Athe weather over there is always terribleBthe condition there is complicatedCthe signals are too strongDtheir SES may receive the signals from unwanted satellite