航海GMDSS通信英语题库 答案.docx

1、航海GMDSS通信英语题库 答案航海GMDSS通信英语题库+答案航海GMDSS英语阅读500题单选题一 第三部份 英语阅读 单项选择题 1.IMO has decided that all ships over 300TGt must be fitted with a NAVTEX receiver _ . A. by 01 Feb 1992B. by 01 Aug 1993 C. between 01 Feb 1992 and 01 Feb 1999D. before 01 Feb 1992 2.GMDSS is to provide _ with reliable communicatio

2、n . A. all large passenger vessels B. freighters of more than 300gt in coastal waters C. all passenger ships and cargo ships engaged in international-voyagesD. all passenger ships and cargo ships of 300gt upwards in open sea 3.The complying vessels can transmit ship-to-shore distress alerts by at le

3、ast _ . A. One means, whether satellite or terrestrial techniquesB. Two means, whether satellite or terrestrial techniquesC. Two separate and independent means, each using different radio communication servicesD. Two means, such as MF DSC and HF DSC 4.The quality of the message can be affected by _

4、. A. climateB. sunshineC. human beings D. both a and b 5.Within the polar areas it is _ to see a satellite in geo-stationary orbit . A. impossible B. possibleC. easyD. difficult 6.The Inmarsat system is open for use by _ countries on a non-discriminatory basis . A. some B. lots of C. many D. all 7.W

5、ith the help of GMDSS _ can be alerted to a distress incident as soon as possible . A. all ships in a large sea areaB. only the sea authorities ashore C. the SAR units ashore and at seaD. the port radios and the coast stations 8.In areas covered by Inmarsat HF can be used as an _ to satellite commun

6、ications. A. alternation B. alternate C. alterD. alternative 9.When receiving a distress alert, the SAR authorities ashore and the ships in the vicinity of the ship in distress will _ in a coordinated search and rescue operation with the minimum delay . A. assist B. send a rescue vesselC. search the

7、 distress area D. reach the distress position at once 10.In which year was the COSPAS-SARSAT system established ? A. 1980B. 1981 C. 1979 D. 1982 11.It is quite _ for an SES operator to send a distress alert . A. easy and expensiveB. simple and certainC. dangerous and stableD. difficult and compulsor

8、y 12.Any ships fitted with SES can _ and _ through the satellite system when sending a distress alert . A. enter the system / contact an RCCB. access to INMARSAT / establish contact with a CES C. have absolute priority to enter the system / make contact with a CES D. enter the system gradually / wai

9、t for rescue 13.Whats the advantage when using the satellites ? A. The message can be directed to the desired locationB. The message can follow the earths curvatureC. The quality of message can not be affected by climatic D. The range of the message extend and the quality of reception is improved 14

10、.The DSC frequency for distress alerting in Area A2 is _ . A. 2182KHZB.C. 2192KHZ D. 15.What channel is general communication used ? A. any appropriate channel except public communication B. any appropriate channel except for public communicationsC. any appropriate channel besides public communicati

11、on D. any appropriate channel beside public communication 16.why do some stations keep silence ? A. Because they are not engaged in the distress trafficB. they will affect the transmission of the distress trafficC. The powers of these stations are very weak D. They are not in charge of search and re

12、scue 17.General radio communications in the global system are those between _ concerning the management and operation of the ships and may have impact on their safety . A. SAR party and the ship in distressB. SAR authorities and the ship in distress and survival craftC. A ship station and any coast

13、stationD. Ship stations and shore-based communication network 18.It is required that ships proceeding at sea should keep continuous watch on _ . A. VHF channels 16 and 13B. Appropriate DSC distress and safety frequenciesC. INMARSAT TDM message channelD. VHF channel 70 and channel 8 19. The ARQ mode

14、should be applied _ . A. when two stations communicate with each otherB. in any radio system and at any time C. when one ship sends a message to another stationD. for communication among some stations 20. What information will a distress alert contain ? A. nature of distress B. type of assistance re

15、quiredC. course and speed and time at which the information was recordedD. A, B, C are all right 21. A radio determination system based on the comparison of reference signals with radio signals reflected , or retransmitted from the position to be determined, is _ . A. DF B. Radar System C. DSC Syste

16、m D. COSPAS-SARSAT 22. With the help of modern technology, ships are able to receive automated broadcast of safety messages _. A. by day or at night B. almost round the clockC. somewhat and sometime D. from sunrise and sunset 23. The WWNWS is a coordinated global service for the broadcast by radio o

17、f vital information on _ to marine navigation. A. ships movement B. safetyC. ships managementD. hazards 24. distress alerts will be relayed on the _ when the RCC considers it necessary . A. dedicated system B. MSI broadcastsC. 518KHZD. channel 16 25. The frequency 518KHZ will be used to transmit _ a

18、nd _ wanings in NAVTEX . A. navigational / typhoon B. traffic / meteorologicalC. 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 areaC. at any distance D. in Area

19、s A3 and A4 27. A Navtex station in each NAVAREA is usually allowed to have _ for transmission . A. 10 minutes every 4 hoursB. half an hour every other hourC. irregular period of time D. 5 minutes every two hours 28. The difference between international and national Navtex Service is limited to _ .

20、A. frequency allocated B. both language and frequencyC. language used D. transmission power and time 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. B2B. B1 C. MAR D. NNN 30. The receiving

21、stations can use the B2 character to _ different, classes of messages . A. identifyB. 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

22、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 strongD. t

23、heir 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 everB. To go forwardC. To march witho

24、ut 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 DSCB. SESC. MF/HF radio telephone installationD. watc

25、h receiver 35. _ is a space system using one or more artificial earth satellites .A. satellite networkB. Satellite LinkC. INMARSATD. Satellite System 36. The satellites over the major ocean regions cover the globe _ . 二 A. besides the polar regionsB. including the North Pole and the South Pole C. ab

26、ove 70N and below 70SD. 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 stopB. the global system will be damaged C. the back-up one will take its placeD. the whole sys

27、tem will not work 38. The position if the IOR satellite in the INMARSAT system is _ above the equator . A. B. 178EC.D. 54W 39. The GMDSS defines four sea area based on the _ . A. location and capacity of the facilities located on board shipsB. Position and type of a sincere sintionC. Capacity and lo

28、cation of shore based communication facilitiesD. Position and capacity of mobile communication stations. 40. The NCS of INMARSAT-A system in the IOR is in _ .A. Goonhilly, UKB. Yamaguchi, Japan C. Perth, Australia D. Southbury, USA 41. The Network Coordination station for the INMARSAT-A coast statio

29、ns in the Pacific ocean region is in _ . A. Yamaguchi, JapanB. Beijing, ChinaC. Nakhodka, RussiaD. 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 th

30、e system / contact with a CESC. establish contact with the RCC / enter the portD. 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 LESB. an SESC. a ship station D. a Land Mobile Station 44. After successful commissioning , the _ will permit the SES access to system. A. INMARSATB. IMO C. MSCD. 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 tele