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全部科目 > 水路交通运输技能考试 > 海船船员考试 > 船舶管理(驾驶专业) > 航海英语 > 海上通信 > GMDSS

单项选择题

The frequency 156.525MHZ and 156.8MHZ should be used in the band of（）.

A.MF
B.VHF
C.HF
D.LF

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单项选择题

Actually, the date for entry into effect will be 1st February（）.Though the text does not tell us about it.

A.1995
B.1998
C.1999
D.2000

单项选择题

The（）is that search and rescue authorities ashore, as well as shipping in the immediate vicinity of the ship in distress, will be rapidly alerted to a distress incident so they can assist in a coordinated SAR operation with the minimun delay.

A.common communication system
B.distress traffic system
C.basic concept of GMDSS
D.SAR operation procedure

单项选择题

（）communication are intership VHF radio telephone communication.

A.ship-to-shore
B.shore-to –ship
C.bridge-to-bridge

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