更多"If no distress acknowledgement is r"的相关试题:
[单项选择]Distress and safety communications following DSC calling will be performed by radiotelephony or（）.
A. NBDP
B. EGC receiver
C. NBDP or both
D. EGC receiver or both
[单项选择]Acknowledgement by you of receipt of a distress message from a vessel which，beyond any possible doubt，is not in your vicinity and is a long distance away must be made when（）.
A. Vessels nearer the distress vessel acknowledge receipt
B. Vessels nearer the distress vessel fail to acknowledge receipt
C. Even you have not reveived the distress
D. Even the vessel in distress expressly prohibit you from providing any salvage service
[单项选择]DSC distress acknowledgements are normally transmitted by（）in respond to a receiver DSC distress call.
A. Ship stations
B. Coast stations
C. NCSs
D. NCC
[单项选择]If a DSC distress relay is transmitted from coast station , it will（）.
A. indicate the ship in distress that the alert has been received
B. alert ships in the area of a distress incident that a distress has occurred
C. inform other coast station of distress incident
D. repeat the distress alert in 5 minutes
[单项选择]If a GMDSS radio operator initiates a DSC distress transmission but does not insert a message，what happens? （）
A. The transmission is aborted and an alarm sounds to indicate this data must be provided by the operator
B. The transmission is not initiated and "ERROR" is indicated on the display readout
C. The transmission will be made with "default" information provided automatically
D. The receiving station will poll the DSC unit of the vessel in distress to download the necessary information
[单项选择]DSC distress relays can be transmitted by either（）or（）.
A. a coast station/a ship station
B. an EPIRB/a SART
C. ARQ/FEC
D. a back-up satellite/a land SAR unit
[单项选择]If a ship station relays a DSC distress call to an appropriate coast station, it means that（）.
A. the ship has received the DSC distress call on a HF frequency
B. the coast station concerned has not acknowledged it within 5 minutes
C. the ship will take command of search and rescue in 5 minutes
D. A and B
[单项选择]The distress alert should（）the ship in distress.
A. identity
B. identical
C. identify
D. identification
[单项选择]Which statement about transmitting distress messages by radiotelephone is INCORRECT?（）
A. Distress messages should first be transmitted on 2182 kHz
B. It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration
C. If no answer is received on the designated distress frequencies，repeat the distress call on any frequency available
D. Channel 16 (156.8 MHz) may be used for distress messages
[单项选择]A distress signal（）.
A. consists of 5 or more short blasts of the fog signal apparatus
B. consists of the raising and lowering of a large white flag
C. may be used separately or with other distress signals
D. is used to indicate doubt about another vessel's intentions
[单项选择]Distress signals may be（）.
A. red flares
B. smoke signals
C. sound signals
D. Any of the above
[单项选择]Ships equipped with Inmarsat SES send distress alerts both（）.
A. quick and good
B. convenient and certain
C. easily and simply
D. important and difficult
[单项选择]All stations which receive a distress alert shall immediately cease（）.
A. any transmission
B. any harmful transmission
C. to use radiotelephone
D. using radiotelephone
[单项选择]After a vessel transmits the original distress message，what signal should be sent to allow ships to take RDF bearings?（）
A. SOS three times
B. Additional transmissions to aid direction finding
C. E for one minute，followed by T for one minute
D. Two tones，10-15 seconds each
[单项选择]Which is a distress signal? （）
A. A triangular flag above or below a ball
B. The International Code Signal of distress indicated by "JV"
C. A green smoke signal
D. Flames on the vessel as from a burning tar barrel
[单项选择]Distress flares and smoke signals for small passenger vessels（）.
A. are not required aboard vessels on runs of less than 30 minutes duration
B. must be Coast Guard approved and stowed in a portable，watertight container
C. must be marked with an expiration date not more than 42 months from the date of manufacture
D. All of the above
