A navigational /typhoon B. traffic/meteorological C. marine / hurricane D navigational / meteorological 26. It is possible for ships to receive safety message transmitted by NAVTEX station A. in any INMARSAT regions B. in each navteX area D in Areas a3 and A4 27. A NAVTEX station in each NAVAREA is usually allowed to have r transmission A. 10 minutes every 4 hours B. half an hour every other hour C irregular period of time D. 5 minutes every two hours 28. The difference between international and national NAVTEX Service is limited to A frequency allocated B. both language and frequency D transmission power and time 29. NAVteX transmitter identification character is used to identify the broadcasts which re to be accepted by the receiver and those are to be rejected B. BI C. MAR D. NNN 30. The receiving stations can use the b2 character to different, classes of messages C. Reject D. Print ou 31. If EGC receiver shares a same antenna with INMARSAT SES. it means that it can receive 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 D 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 D 34. In addition to meeting the requirement of Sea area Al, 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 a space system using one or more artificial earth satellites A satellite network B Satellite Link C INMARSAT D Satellite System D 36. The satellites over the major ocean regions cover the globe 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 A communications in the whole system will stop B the global system will be damaged C the back-up one will take its plac D. the whole system will not work C 38. The position if the IOR satellite in the INMARSAT system is above the equator A.64 B.178E C.15.5W D.54W3 A. navigational / typhoon B. traffic / meteorological C. marine / hurricane D. navigational / meteorological D 26. It is possible for ships to receive safety message transmitted by NAVTEX station ______ . A. in any INMARSAT regions B. in each NAVTEX area C. at any distance D. in Areas A3 and A4 B 27. A NAVTEX station in each NAVAREA is usually allowed to have ______ for transmission . A. 10 minutes every 4 hours B. half an hour every other hour C. irregular period of time D. 5 minutes every two hours A 28. The difference between international and national NAVTEX Service is limited to ______ . A. frequency allocated B. both language and frequency C. language used D. transmission power and time B 29. NAVTEX transmitter identification character ______ is used to identify the broadcasts which are to be accepted by the receiver and those are to be rejected . A. B2 B. B1 C. MAR D. NNN B 30. The receiving stations can use the B2 character to ______ different, classes of messages . A. identify B. Correct C. Reject D. Print out A 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 C 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 D 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 . D 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 A 35. ______ is a space system using one or more artificial earth satellites . A. satellite network B. Satellite Link C. INMARSAT D. Satellite System D 36. The satellites over the major ocean regions cover the globe ______ . 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 D 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 C 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 A