broadcasts which are to be accepted by the receiver and those are to be rejected . A. B2 B. B1 C. MAR D. NNN
30. The receiving stations can use the B2 character to ______ different, classes of messages .
A. identify B. Correct C. Reject D. Print out 31. If EGC receiver shares a same antenna with Inmarsat SES, it means that it can receive MSI ______ .
A. from any Inmarsat satellite B. from any appropriate Navtex and EGC station
C. via the satellite the SES is tracking D. from any RCC and coast station 32. Why should the SES operators be very careful when the ship enters the area where three ocean regions overlap ? Because ______ . A. the weather is always terrible B. the condition there is complicated C. the signals are too strong
D. their SES may receive the signals from unwanted satellite
33. The establishment of INMARSAT as an independent organization marked a great step forward for maritime radio communications . What does “marked a great step” mean in the sentence ?
A. To run faster than ever B. To go forward C. To march without stopping
D. A significant symbol of a great improvement in maritime communication . 34. In addition to meeting the requirement of Sea area A1, every ship engaged on voyage in Sea area A2 shall be provided with ______ .
A. MF radio installation with DSC B. SES
C. MF/HF radio telephone installation D. 2187.5KHZ watch receiver 35. ______ is a space system using one or more artificial earth satellites . A. satellite network B. Satellite Link C. INMARSAT D. Satellite System
36. The satellites over the major ocean regions cover the globe ______ . 二
A. besides the polar regions B. including the North Pole and the South Pole
C. above 70N and below 70S D. as far north and south 70
37. There are some back-up satellites in the event of failure. If the operational satellite is out of work, ______ .
A. communications in the whole system will stop B. the global system will be damaged
C. the back-up one will take its place D. the whole system will not work
38. The position if the IOR satellite in the INMARSAT system is ______ above the equator .
A. 64.5E B. 178E C. 15.5W D. 54W 39. The GMDSS defines four sea area based on the ______ .
A. location and capacity of the facilities located on board ships B. Position and type of a sincere sintion
C. Capacity and location of shore based communication facilities D. Position and capacity of mobile communication stations.
40. The NCS of INMARSAT-A system in the IOR is in ______ . A. Goonhilly, UK B. Yamaguchi, Japan C. Perth, Australia D. Southbury, USA
41. The Network Coordination station for the INMARSAT-A coast stations in the Pacific ocean region is in ______ .
A. Yamaguchi, Japan B. Beijing, China C. Nakhodka, Russia D. Perth, Australia
42. Any ship with SES can ______ and ______ through the Inmarsat satellites when sending a distress alert .
A. enter the system rapidly / wait for rescue
B. have an absolute priority to enter the system / contact with a CES C. establish contact with the RCC / enter the port D. enter the system gradually / get the rescue
43. A mobile earth station in the maritime mobile-satellite service, which is located on board ship, is called ______ .
A. an LES B. an SES C. a ship station D. a Land Mobile Station
44. After successful commissioning , the ______ will permit the SES access to system.
A. INMARSAT B. IMO C. MSC D. CES
45. In general, there are two parts in an SES, One of these is antenna eqipment also referred to as ______ .
A. BDE B. UDE C. AEP D. ADE
46. To establish a communication channel for the telex service in the INMARSAT-A
terminal, you should first ______ .
A. establish a communication channel from the CES, via the International Telex Network to the final destination
B. set up a communication channel from your SES, via a satellite, to a CES within your ocean region
C. set up a channel directly to the addressee at the destination
D. establish a channel from your terminal , via the International Telex Network to a CES within your ocean region
47. The maritime access code for the AOR-E is ______ in INMARSAT-A Telex Service . A. 581 B. 582 C. 583 D. 584
48. When you have received GA+ from the CES for the INMARSAT-A telex communication, you should immediately select ______ and ______ you required .
A. an CES / telex mode B. an SES telex service C. the service /the subscriber D. a satellite /an ocean region 49. Every ship must be fitted with SART, and two-way VHF radio telephone . A. 1, 2 B. 2, 3 C. 2, 1 D. 3, 2
50. The maritime access code of telephone mode in INMARSAT-A terminal for the IOR is _____.
A. 871 B.872 C.873 D. 874
51. ______ are operated as a secondary method of alerting in the GMDSS . A. satellite EPIRBs B. Non-satellite EPIRBs C. SES and DSC D. a+b
52. Which Inmarsat system applies store-and-forward messaging ?
A. Inmarsat-A B. Inmarsat-C C. Inmarsat-B D. Inmarsat-M
53. Distress signal are always stored in the memory so as to start ______ . A. local-mode coverage B. SAR operations C. data process D. continuous broadcast 54. EGC is a ______ part of INMARSAT-C .
A. component B. supportable C. combined D. complimentary 55 An area within the coverage of at least one VHF shore station in which continuous DSC distress alerting is available is ______ .
A. sea area A1 B. sea area A2 C. distress area D. GMDSS areas 56. An area within the coverage of at least one MF shore station in which continuous DSC distress alerting is available is ______ .
A. Sea area A1 B. Sea area A2 C. Distress area D. GMDSS areas 57. In area A2, the DSC frequency for distress alerting is ______ . A. 2182KHz B. 2174.5KHz C. 2191KHz D. 2187.5KHz 58. If a DSC distress relay is transmitted from coast station , it will ______ . A. indicate the ship in distress that the alert has been received B. alert ships in the area of a distress incident that a distress has occurred C. inform other coast station of distress incident D. repeat the distress alert in 5 minutes
59. Ship-to-ship distress alerting should be conducted by ______ . A. Inmarsat SES B. VHF/DSC or MF/DSC C. SART and VHF/DSC D. Satellite EPIRB and VHF/DSC
60. If the DSC controller is configured for MF/HF operation, the distress will be sent on ______.
A. double frequencies B. single frequency
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