单项选择题
The principal advantage of NAVTEX radio warnings is that（）.
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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相关考题
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单项选择题
The Master shall insure that the Emergency Position Indicating Radiobeacon (EPIRB) is（）.
A.secured inside the wheelhouse
B.tested annually
C.tested monthly
D.secured in the emergency locker -
单项选择题
The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called（）.
A.NAVTEX
B.HYDROLANT/HYDROPAC
C.NAVAREA
D.SAFESEA -
单项选择题
The Emergency Position Indicating Radiobeacon on a cargo vessel must be stowed（）.
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
