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
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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
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
最新試題
Radio communication（）for many years and helps to save tens of thousands of lives.
On-scene communications will normally take place between（）.
Particular care should be（）in selecting CESs in areas where Ocean Regions overlap.
What following is not among the function of SOLAS ships?（）
If the beacon is mounted at a wrong place, it may（）by sea water, chemicals, exhaust and vibrations.
All coast radio stations（）DSC installed for VHF and HF.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）
Please use（）for（）.
COSPAS-SARSAT is intended to be used for（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.