单项选择题
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.
A.HF
B.VHF
C.MF
D.MF/HF
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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.
A.518
B.2182
C.156.8
D.2187.5 -
单项选择题
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
A.1 February 1995
B.1 February 1992
C.1 July 1997
D.1 February 1999 -
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In case a ship is in emergency or distress in any of 4 areas, it is required to use the continuous（）alert.
A.MF/HF
B.SART
C.EPIRB
D.any of A, B, C
