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
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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
A.permanently mounted in the survival craft
B.portable and stowed for carriage to the survival craft
C.permanently mounted on the bridge wings
D.portable and stowed in the emergency gear locker
A.understanding the GMDSS console's normal operational indicators
B.maintaining a proper GMDSS radio station log
C.responding to and comprehending alarms
D.All of the above
最新試題
Radio communication（）for many years and helps to save tens of thousands of lives.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
The rescue coordination center may（）on stations which interfere with traffic.
The priority of EGC messages is classified by（）.
The quality of EGC messages is（）affected by the position of the ship, the time of reception and climatic conditions.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
Before GMDSS, if the radio officer on board is serious ill,（）.
International Navtex service means the coordinated broadcast and automatic reception on（）khz of maritime safety information by narrow-band direct-printing telegraphy using English language.