A.secured inside the wheelhouse
B.tested annually
C.tested monthly
D.secured in the emergency locker
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A.NAVTEX
B.HYDROLANT/HYDROPAC
C.NAVAREA
D.SAFESEA
A.in an inside passageway
B.in an approved bracket
C.so that it is accessible from the bridge of the vessel
D.so that it will float free if the vessel sinks
A.operates on both military and civilian aircraft distress frequencies
B.transmits both an alerting signal and a homing signal
C.must be the float free type and automatically activated
D.operates with a greater output of signal power
A.for precise navigation in coastal waters
B.by measuring the phase difference of the dots and dashes
C.as an aid to ocean navigation
D.if the vessel is fitted with a special Consol receiver
A.that follows the curvature of the earth
B.that can be picked up by SARSAT satellite
C.that activates an alarm on board nearby aircraft
D.to alert shore stations and then transmits a homing signal
最新試題
Radio beacon can be activated（）in case of distress.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
On-scene communications will normally take place between（）.
The frequency（）the safety message will be transmitted shall be included in DSC safety call.
In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
Radio communication（）for many years and helps to save tens of thousands of lives.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
All coast radio stations（）DSC installed for VHF and HF.