选B

112.Which characters are sent by the ship station to indicate a desire a to send a weather observation message? A.OBS+ B.MSG+ C.AMV+ D.OPR+ 选A

113.The first communication satellite was used for the purpose of______ A.talking the place of the f radio system B.introducing a new life-saving system C.saving the vessels in distress D.improving the communication on land 选D

114.The position if the IOR satellite in the INMARSAT system is______above the equator A.64.5E B.178E C.15.5W D.54W 选A

115.NAVES Receivers also use the B2 character to______different classes of message A.identify B.reject C.print out D.correct 选A

116.According to the basic concept of GMDSS,______can be rapidly alerted to a distress incident A.only SAR authorities on land B.all ships in a very large sea area C.the nearest coast stations and port radios

D.the SAR authorities ashore as well as ships in the vicinity of the casualty 选D

117.Which of the following indicates a grave and imminent danger requesting immediate assistance on the radio telephone? A.TTT B.MAYDAY C.SECURITE D.PAN

选B

118.VHF telephone equipment should be able to send and receive DSC message on channel______ A.6 B.13 C.16 D.70 选D

119.What shall be transmitted to avoid all ships in a large sea area being alerted? A.area all B.distress call C.urgency call D.DSC call

选A

120.The WWNWS establishes three types of navigational warning______ A.Distress Urgency and Safety B.Vital,Important and Routine C.NAVAREA,Coastal and Local D.Gale,Tsunami and Ice 选C

121.Which of the followings is not among the functions of SOLAS ships? A.receive shore-to-ship distress alerting B.transmit ship-to shore distress alerting C.receive message for public correspondence D.transmit and receive locating signals 选C

122.______consists of all messages relating to the immediate assistance