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单选题
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
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考题
DSC遇险呼叫时,它的格式符£¯类别是()。
A、Distress/distressB、allship/DistressC、Distress/ALL shipD、All ship/All ship
考题
Which frequencies and modes are allocated for distress alerting in GMDSS ________．A.406 MHz via EPIRBB.1626.5-1645.5 via INMARSATC.Channel 70 DSC plus six（6）MF/HF DSC frequenciesD.All of the above
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如果用DSC设备收妥确认遇险报警信息，在DSC上应选（）A、DISTRESS ACKNOWLEDGEB、URGENT CALLC、DISTRESS RELAYD、SAFETY CALL
考题
单选题The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.A
ALWAYS be included in the initial distress messageB
be sent to a Coast Guard station FIRSTC
be transmitted as a series of short messages，if time allowsD
include the vessel's draft
考题
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.A
relevant toB
relate toC
in response toD
in relation to
考题
单选题What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received? （）A
No action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequencyB
The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was receivedC
The Operator should immediately set continuous watch on VHF channel 70D
The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received
考题
单选题DSC distress acknowledgements are normally transmitted by（）in respond to a receiver DSC distress call.A
Ship stationsB
Coast stationsC
NCSsD
NCC
考题
单选题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 frequencyB
the coast station concerned has not acknowledged it within 5 minutesC
the ship will take command of search and rescue in 5 minutesD
A and B
考题
单选题If a DSC distress relay is transmitted from coast station , it will（）.A
indicate the ship in distress that the alert has been receivedB
alert ships in the area of a distress incident that a distress has occurredC
inform other coast station of distress incidentD
repeat the distress alert in 5 minutes
考题
单选题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 operatorB
The transmission is not initiated and ERROR is indicated on the display readoutC
The transmission will be made with default information provided automaticallyD
The receiving station will poll the DSC unit of the vessel in distress to download the necessary information
考题
单选题What is the basic concept of GMDSS? （）A
Search and rescue authorities ashore can be alerted to a distress situationB
Shipping in the immediate vicinity of a ship in distress will be rapidly alertedC
Shoreside authorities and vessels can assist in a coordinated SAR operation with minimum delayD
All of the above
考题
单选题For ship-to-shore distress alerts, you can use（）.A
INMARSAT, EPIRB and DSCB
NAVTEX, NBDP and R/TC
INMARSAT, VHF and SARTD
EPIRB, DSC and radar
考题
单选题（）all ships in a large sea area being alerted, an “area call” will normally be transmitted so that only those ships in the vicinity of the distress incident are alerted.A
AvoidingB
To be avoidedC
AvoidedD
To avoid
考题
单选题（）are used for distress alerting as a rule.A
SES/DSC/EPIRBB
SART/radiotelephoneC
COSPAS-SARSATD
both B and C
考题
单选题Which of the following statements represents the main difference between a relay and a contactor?（）A
Contactors control current and relays control voltageB
A relay is series connected and a contactor is parallel connectedC
Contactors can handle heavier loads than relaysD
Contactors are made from silver and relays are made from copper
考题
单选题The frequency（）the safety message will be transmitted shall be included in DSC safety call.A
whichB
on whichC
at whichD
in which
考题
单选题The control of distress traffic is the responsibility of（）.A
the ownersB
the charterersC
the shipperD
the vessel in distress or of the station that relays the distress message
考题
单选题The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.A
ALWAYS be included in the initial distress messageB
be sent to a MSA station FIRSTC
be transmitted as a series of short messages，if time allowsD
include the vessel's draft
考题
单选题When sending a DSC call，the vessel’s（）.A
position will automatically be sentB
position will only be sent if the vessel is making a distress callC
MMSI will indicate its ocean regionD
None of the above
考题
单选题Ship-to-ship distress alerting should be conducted by（）.A
Inmarsat SESB
VHF /DSC or MF/DSCC
SART and VHF/DSCD
Satellite EPIRB and VHF /DSC
考题
单选题Which of the following statements about transmitting distress messages by radiotelephone is INCORRECT?（）A
If no answer is received on the designated distress frequencies，repeat the distress call on any frequency availableB
Channel 16 (156.8) may be used for distress messagesC
It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds durationD
Distress messages should first be transmitted on 2182 kHz
考题
单选题Which channel and mode should be used when initiating a distress alert transmission（）.A
Channel 6 DSCB
Channel 6 RadiotelephonyC
Channel 13 Radiotelephony and channel 16 DSCD
Channel 70 DSC
考题
单选题The complying vessels can transmit ship-to-shore distress alerts by at least（）.A
One means, whether satellite or terrestrial techniquesB
Two means, whether satellite or terrestrial techniquesC
Two separate and independent means, each using different radio communication servicesD
Two means, such as MF DSC and HF DSC
考题
单选题What does the DSC control unit do if the GMDSS radio operator fails to insert updated information when initiating a DSC distress alert?（）A
It will abort the transmission and set off an audible alarm that must be manually resetB
It will initiate the DSC distress alert but，as no information will be transmitted，rescue personnel will not be able to identify the vessel，its position or its situationC
It will initiate the DSC distress alert and default information will automatically be transmittedD
It will initiate the DSC distress alert，but any station receiving it will have to establish contact with the distressed vessel to determine its identity，position and situation
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