required by the ship in distress A.Distress traffic B.Urgency traffic C.Safety traffic D.Distress 选A

123.Which of the following is not a DSC calling content? A.the ID of calling ship B.the name of calling ship C.category of priority D.work frequency 选B

124.Telstar,the world’s first communication satellite,was______in 1962 A.returned back

B.flying into sky C.put into orbit D.destroyed 选C

125.Which system is often used to provide accurate vessel position information to the GMDSS equipment? A.GPS

B.COSPAS-SARSAT C.EPIRB D.INMARSAT-F 选A 126.Which

satellite-based

service

provides

global

telephone,TELEX,facsimile and HSD communications? A.INMARSAT Standard-c

B.Standard-F C.Safety NET D.DSC 选B

127.The low polar orbiting satellite system provides the coverage of______ A.Area A4 B.Area A1 and A2 C.Area A3

D.Area A1,A2,A3 and A4 选D

128.______means a technique using digital codes which enables a radio station to establish contact with,and transfer infoumation to anther station or group of stations and complying with the relevant recommendation of

the International Radio Consultative Committee A.DSC B.MSI C.EGC D.NBDP 选A

129.In general,there are two parts in an SES.One of these is antenna equipment,also referred to as______ A.BDE B.UDE C.AEP D.ADE 选D

130.The traditional terrestrial radio system has a number of basic flaws

which______

A.can be overcome by using traditional techniques B.can not be overcome by satellite system

C.can be overcome by satellite and digital techniques D.can not be tackled by any modern 选C

131.The safety radio certificate for the cargo ship is issued______ A.by the radiotelegraphy authority of a country B.in accordance with the government regulations

C.by complying with the provisions of the international conventions D.under the provisions of the SOLAS convention 选D

132.The medical message should be preceded by the word______ A.OBS