C. 2177KHz
D. 2176.5KHz.
236 DSC is a technique of transmitting ___________ which allow suitably equipped stations to
transmit and receive distress alerts and other calls. A. languages
B. digital codes C. dots
D. pulse signals.
237 At the coast station, ship-to-shore distress calls receive priority handling and are routed to
___________.
A. the distress ship
B. the ships in the vicinity of the distress.
C. the nearest RCC.
D. the defined area(s).
238 __________, the SART automatically emits response signals to indicate survivors? position on
the radar display.
A. When receiving 9GHz radar signals. B. When turned on the battery switch. C. When plunged into the water
D. When it is floating freely on the water surface.
239 Which isn?t the main factor(s) affect the range at which a SART will be detected on a ship?s
radar screen?
A. The type of radar used. B. The weather conditions C. The mounting of the SART.
D. The power of the SART
240 The priority marking consists of the word __________ added as a prefix to the NAVTEX
message.
A. VITAL, IMPORTANT or ROUTINE B. DISTRESS, URGENCY or SAFETY
C. MAYDAY, PAN PAN or SECURITE D. DISTRESS, URGENCY, SAFETY or ROUTINE 241 ___________ is the only mean of distress alerting used in Area A4? A. MF B. HF C. VHF D. INMARSAT. 242 The frequency 156.525MHz and 156.8MHz should be in the band of ________________. A. MF B. VHF C. HF D. LF
1 Before an Inmarsat-A SES can be used in the Inmarsat system, it must have been properly
installed and commissioned. Only after successful commissioning will the INMARSAT permit the SES to access the system. The commissioning tests are performed on the scheduled date on board the ship. 1 问题(1)A Ship earth station can be used______. A. after it has been successfully commissioned B. as soon as it has been installed on board
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C. before it was correctly commissioned
D. when it is being installed on board
2 Before an Inmarsat A SES can be used in the Inmarsat system, it must have been properly
installed and commissioned. Only after successful commissioning will the INMARSAT permit the SES to access the system. The commissioning tests are performed on the scheduled date on board the ship. 2 问题(2) Without the permission of ______ , a ship earth station
cannot access the system.
A. ITU
B. the International Maritime Satellite Organization C.the nearest CES
D. the International Maritime Organization
3 Within approximately 15 seconds you should receive the ringing tone of the called subscriber.
When the subscriber answers this means that the telephone link to the subscriber has been established and the charging period begins. The charging period will end from the time when the link to the subscriber is disconnected. 1 问题(1)The charging time starts______. A. after about 15 seconds
B. after more than 15 seconds
C. as soon as the link has been established D. before the subscriber answers
4 Within approximately 15 seconds you should receive the ringing tone of the called subscriber.
When the subscriber answers this means that the telephone link to the subscriber has been established and the charging period begins. The charging period will end from the time when the link to the subscriber is disconnected. 2 问题(2)\approximately 15 seconds \ A. after about 15 seconds B. not more than 15 seconds C. in about 15 seconds 5
D. about 15 seconds later
The GMDSS will provide Maritime Safety Information (MSI) that is navigational and meteorological warnings and urgent information to shipping. A NAVTEX receiver自动航行警告接收机 receives MSI broadcast from NAVTEX stations. Within the area of INMARSAT coverage, an EGC 增强群呼receiver receives MSI via INMARSAT Safety Net TM SERVICE国际海事卫星安全网终端业务. MF/HF radiotelephone with NBDP窄带直接印字 terminal receives the MSI sent from coast station. 1 问题(1) The word “shipping” here means_____. A. a ship
B. shipping companies C. ships in navigation D. shipping industry 6
The GMDSS will provide Maritime Safety Information (MSI) that is navigational and meteorological warnings and urgent information to shipping. A NAVTEX receiver receives MSI broadcast from NAVTEX stations. Within the area of INMARSAT coverage, an EGC receiver receives MSI via INMARSAT Safety Net TM SERVICE. MF/HF radiotelephone with NBDP terminal receives the MSI sent from coast station. 2 问题(2) The
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INMARSAT Safety Net TM service is a _____service. A. Time
B. Meteorological Warning C. Safety Net Terminal D. On-board 7
The GMDSS will provide Maritime Safety Information (MSI) that is navigational and meteorological warnings and urgent information to shipping. A NAVTEX receiver receives MSI broadcast from NAVTEX stations. Within the area of INMARSAT coverage, an EGC receiver receives MSI via INMARSAT Safety Net TM SERVICE. MF/HF radiotelephone with NBDP terminal receives the MSI sent from coast station. 3 问题(3) Will MF/HF radiotelephone receive the MSI from coast stations alone? A. Yes, it will.
B. No, it will not receive the MSI from ship stations. C. No, it receives the MSI from ship stations. 8
D. Only with the NBDP terminal, will it receive the MSI from coast stations.
Select the coast earth station through which you wish to establish the call. The CES must be operating within the same ocean region that you are currently using. Particular care should be taken in selecting CESs in areas where ocean regions overlap. In Western European waters there is actually an overlap of three ocean regions, where ships may receive unwanted signals from unwanted satellites. 1 问题(1). This passage is about_____. A. how to operate the CES in overlapped area
B. how to establish a communication channel C. how to select a coast earth station D. how to keep in touch with any CF.S
Select the coast earth station through which you wish to establish the call. The CES must be operating within the same ocean region that you are currently using. Particular care should be taken in selecting CESs in areas where ocean regions overlap. In Western European waters there is actually an overlap of three ocean regions, where ships may receive unwanted signals from unwanted satellites. 2 问题(2) The CES operator has to choose ______ for establishment of the call. A. any CES B. the appropriate CES C. the nearest port radio D. the most powerful radio
10 Select the coast earth station through which you wish to establish the call. The CES must be
operating within the same ocean region that you are currently using. Particular care should be
taken in selecting CESs in areas where ocean regions overlap. In Western European waters there is actually an overlap of three ocean regions, where ships may receive unwanted signals from unwanted satellites. 3 问题(3) There is actually an overlapped area of _____ ocean regions somewhere in Western European Waters. A. more than two B. as many as three C. less than two D. up to four
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9
11 Distress traffic consists of all messages relating to the immediate assistance required by the
ship in distress, including search and rescue communications and signals for locating. The rescue coordination center responsible for controlling a search and rescue operation will also control the distress traffic relating to the incident and may impose silence on stations which interfere with that traffic. 1 问题(1)Why do some stations keep silence? A. They are not in the distress traffic.
B. They will affect the transmission of distress traffic. C. They are not responsible for search and rescue . D. Their power is very weak.
12 Distress traffic consists of all messages relating to the immediate assistance required by the
ship in distress, including search and rescue communications and signals for locating. The rescue coordination center responsible for controlling a search and rescue operation will also control the distress traffic relating to the incident and may impose silence on stations which interfere with that traffic. 2 问题(2) Which of the following has the same meaning as
the phrase \A. owing to B. such as C. concerning D. for instance
13 Distress traffic consists of all messages relating to the immediate assistance required by the
ship in distress, including search and rescue communications and signals for locating. The rescue coordination center responsible for controlling a search and rescue operation will also control the distress traffic relating to the incident and may impose silence on stations which interfere with that traffic. 3 问题(3) This passage tells us______. A. some stations may have interference
B. the distress vessel requires assistance
C. what distress traffic consists of and who will control it
D. how to send out signals for locating
14 For communication between two stations the ARQ mode should be used when available. For
transmission from one coast or ship station to two or more other stations the FEC mode
should be used when available. The services provided by each station open to public correspondence shall be indicated in the list of coast stations and in the list of ship stations, together with information on charging. 1 问题(1) The ARQ mode should be applied_____.
A. when two stations communicate with each other B. in any radio equipment and at any time
C. when one ship station transmits message to another station
D. for communication among .several stations
15 For communication between two stations the ARQ mode should be used when available. For
transmission from one coast or ship station to two or more other stations the FEC mode should be used when available. The services provided by each station open to public correspondence shall be indicated in the list of coast stations and in the list of ship stations, together with information on charging. 2 问题(2) The FEC mode is for _____ from _____ station to two or more other stations when available.
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