更多"DSC distress acknowledgements are n"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]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]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.
A. relevant to
B. relate to
C. in response to
D. in relation to
[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]One method of reducing the length of radio transmissions without distorting the meaning of your words is by using（）.
A. slang
B. secret codes
C. procedure words
D. analogies
[单项选择]In NAVTEX service, VITAL warnings will（）by transmitting station.
A. be transmitted at once though the frequency is not clear
B. be transmitted as soon as the frequency is cleared coordinately
C. be transmitted at its scheduled transmissions
D. be transmitted at next scheduled transmissions
[单项选择]The distress alert should（）the ship in distress.
A. identity
B. identical
C. identify
D. identification
[单项选择]Acknowledgements, sequencing, and flow control are characteristics of which OSI layer（）。
A. Layer2
B. Layer3
C. Layer4
D. Layer5
E. Layer6
F. Layer7
[单项选择]A distress signal（）.
A. consists of 5 or more short blasts of the fog signal apparatus
B. may be used separately or with other distress signals
C. consists of the raising and lowering of a large white flag
D. is used to indicate doubt about another vessel's intentions
[单项选择]（）is used for calling and replying,and for transmitting acknowleding and relaying distress alerts.
A. NAVETEX receiver
B. Search and Rescue Transponder
C. Emergency Position Indicating Radio Beacom
D. Digital selective calling
[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]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]When you are firing a pyrotechnic distress signal，it should be aimed（）.
A. horizontally and directly abeam of your vessel
B. at the vessel whose attention you want to attract
C. into the wind
D. at greater than 60 degrees above the horizon
[单项选择]What is NOT a distress signal?（）
A. Red flares or red rockets
B. Continuous sounding of fog signaling apparatus
C. International Code Flags "November" and "Charlie"
D. Basket hanging in the rigging
[单项选择]If you are transmitting a distress message by radiotelephone you should（）.
A. use English language
B. always use the International Code
C. preface it by the word interco
D. follow the transmission with the radio alarm signal
