【单选?/p>
When activated in a distress situation, SART should provide survivors ______, when it
is interrogated by a radar.
A.20 blips
B.special radar imagine
C.visual and audible indication
D.straight line
【单选?/p>
______ can receive MSI sent by coast station.
A.A NA
VTEX receiver
B.An EGC receiver
C.MF/HF radio telephone
D.HF radio telephone with NBDP
【单选?/p>
The frequency ______ is normally used for distress and safety traffic.
A.490 kHz.
B.518 kHz.
C.4209.5 kHz.
D.2174.5 kHz.
【单选?/p>
________communications are intership VHF radio telephone communications for the
purposes of the safe movement of the ships.
A.Safety
B.Urgent
C.Bridge-to-Bridge
D.Distress
【单选?/p>
All complying vessels fitted with maritime VHF installations should maintain watch on
______.
A.156.8MHz
B.CH 70
C.2182kHz
D.CH 8
【单选?/p>
______ is a station in the mobile service, which is used in distress and which transmits
signals to facilities SAR operation, and which is not used 9GHz frequency band.
A.SART
B.EPIRB
C.DSC
D.GPS
【单选?/p>
In the followings, the statement ______ concerning Inmarsat-C is true.
A.This utilizes 4B3Y mode transmissions from the ship to the shore station.
B.This utilizes packet oriented type protocol over the satellite.
C.This utilized 4Y3B mode over the satellite.
D.This utilizes real-time signaling.
【单选?/p>
The
telegram
"AMENDED
ETA
1900/
4TH
OWING
STRONG
WIND"
says
that
______.
A.ETA is received
B.ETA is changed
C.ETA is earlier
D.ETA remains unchanged