A.impossible
B.possible
C.easy
D.difficult
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A.climate
B.sunshine
C.human beings
D.both a and b
A.One means, whether satellite or terrestrial techniques
B.Two means, whether satellite or terrestrial techniques
C.Two separate and independent means, each using different radio communication services
D.Two means, such as MF DSC and HF DSC
A.all large passenger vessels
B.freighters of more than 300gt in coastal waters
C.all passenger ships and cargo ships engaged in international-voyages
D.all passenger ships and cargo ships of 300gt upwards in open sea
A.by 01 Feb 1992
B.by 01 Aug 1993
C.between 01 Feb 1992 and 01 Feb 1999
D.before 01 Feb 1992
A.He/she must have an STCW certificate endorsed as“Valid for Service on Vessels Operating in the GMDSS System”
B.He/she must present either an FCC-issued license or a Coast Guard-issued license
C.You must consult the“List of Qualifications”on the reverse of his/her FCC-issued license
D.His/her Merchant Mariners Document must have an added endorsement as “Radio Electronics Officer”
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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.
（）will form the basis for distress alerting and safety calling.
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.
For COSPAS-SARSAT system,（）usually transmit initial COSPAS-SARSAT alert.
Radio beacon can be activated（）in case of distress.
Ship-to-ship distress alerting should be conducted by（）.
Before GMDSS, if the radio officer on board is serious ill,（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Can MF/HF radiotelephone receive the MSI sent from the coast stations alone?（）