A.A commonly used abbreviation such as NYC is used
B.The name is spelled out
C.The geographical coordinates are used
D.The radio station call sign for the nearest marine radio station is used
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A.they can be used by mariners who do not know Morse code
B.only an ordinary FM radio is necessary to receive these warnings
C.information on a given topic is only broadcast at specified times
D.they cover a broad spectrum of the radio band allowing reception on almost any type of receiver
A.secured inside the wheelhouse
B.tested annually
C.tested monthly
D.secured in the emergency locker
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
最新試題
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.
Every lifeboat which is fitted with a fixed two-way vhf radiotelephone apparatus with（）which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
By using（）system a ship can send a distress message and know with certainty it will be received.
At least two two-way VHF radiotelephone apparatus shall be provided on every cargo ship of（）tons gross tonnage and upwards but less than 500 tons gross tonnage.
Every lifeboat which is fitted with a fixed two-way（）radiotelephone apparatus with an antenna which is separately mounted shall be provided with arrangements for sitting and securing the antenna effectively in its operating position.
On-scene communications will normally take place between（）.
The rescue coordination center may（）on stations which interfere with traffic.
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
As each MSI message will have a unique identity, the printing of messages already received correctly is（）.