GMD新题解析.docx

1、GMD新题解析1Which definitions meaning is the“Telephone using phase modulation”.(C) A A1A B G2B C G3E D G3B常用: A3E_双边带调幅电话 (Telephony using amplitude modulation: double side) F3E_调频电话 (Telephony using frequency modulation) H3E_单边带全载波电话(Telephony using amplitude modulation: single side band ,full carrier)

2、 J3E_单边带抑制载波电话(telephony using amplitude modulation:single side band, suppressed carrier) R3E_单边带减幅载波电话(Telephony using amplitude modulation: single side band, amplitude reduction carrier) F1B_调频电报(Frequency modulation telegraphy with automatic reception, without using a modulating subcarrier) G2B_调

3、相电报(phase modulation telegraphy(automatic reception) J2B_调幅电报(telegraphy using amplitude modulation: single :side band, suppressed carrier) *A1A_连续波莫尔斯电报(Continuous wave telegraphy, Morse code)(莫尔斯电报已不用)517. If MID is 232, which of the following MMSIs is used to identify individual ships.(B)A. 00232

4、2019 B. 232157000 C. 023201143 D. 157000232518. If MID is 232, which of the following MMSIs is used to identify groups of ships.(C)A. 002322019 B. 232157000 C. 023201143 D. 157000232509. If MID is 232, which of the following MMSIs is used to identify coast stations.(A)A. 002322019 B. 232157000 C. 02

5、3201143 D. 1570002322The following number is INMARSAT-C SESs number, which one is Chinese vessels?(B) A. 421256545 B441212345 C 415701234 D 4124123453What kinds of ships may not use SOLAS convention?(A) ACargo ships less than 300 tons BCargo ships more than 300 tons Cpassenger ships sail on internat

6、ional service DB&C4The frequency 156.525MHz and 156.8MHz should be in the band of .(A) AVHF BHF C MF D MFHF5The broadcast of MSI will be made by .(D)ANAVTEX B EGC C HF NBDP D A+B+C6What is the main means in the GMDSS for locating ship in distress or their survival craft?(B)ANAVTEX B. SART C EGC D A&

7、B7The radio equipment to be carried on board GMDSS ship depends upon.(C) A Gross tons B kind of ship C sea area D A+B8. _ should be used during the poor visibility if the radars screen shows heavy sea returns(C) AGain control BBrilliant control CAnti-clutter control DSweep9. Which of the fo11owing i

8、ndicates that a station transmits messages concerning navigation safety by radio telephone?(C) A MAYDAY B PAN PAN C SECURITE D SAFETY10Which of the fo11owing indicates a grave and imminent danger, requesting immediate assistance on the radio telephone?(A)A MAYDAY B PANPAN C SECURITE D SAFETY11If we

9、pass the exam，it may be possible for us to obtain_.(C) A First Class Radio Electronic Certificate B Second Class Radio Electronic Certificate C General Operators Certificate D Restricted Operators Certificate12. Which of the following function is not fulfilled by Inmarsat-C?(D)A TELEX B EGC C FAX D

10、PHONE13. The EGC service is composed of_.(D)A. SAFETY NET B. FLEET NET C. DATA REPORT C. A&B14. Which of the following are included in mandatory services of Inmarsat-C?(D) A. F1eet NET BNBDP CDSC DSafety NET15. Which of the following is not included in Terrestrial communications?(C) A SSB B NBDP C.

11、EGC D MFHF16. A11 distress messages should be preceded by_(A) A. MAYDAY B PANPAN C SECURITE D SAFETY17Which of the following statements about the charges for safety net services is correct：(A) Athere is no charges to the mariner for receipt of Safety net messages BSafety net messages are charged by

12、connection time CSafety net messages are charged by Mbits transmittedD. B or C18. Among fleet77/55/33 systems, which of the following statements about Distress call is correct?(A) A. Distress call is only available on fleet77 systems. B. Distress call is only available on fleet55 systems. C. Distres

13、s call is only available on fleet77/55/33 systems. D. both A and B.19. The difference between the mobile ISDN and MPDS is that: (A) A. The mobile ISDN is charged by connection time and MPDS is charged by Mbits transferred B. The mobile ISDN is charged by Mbits transferred and MPDS is charged by conn

14、ection time C. There is no difference between the mobile ISDN and MPDS D. The communication fee of the mobile ISDN is inexpensive than that of MPDS20. Which of the following IMN is used for INMARSAT-F MES voice service?(A)A. 76XXXXXXX B. 60XXXXXXX C. 3412XXXXX D. 66XXXXXXX关于IMN: 1.GMDSS设备: A站_7位数,以1

15、开头; B站_9位数,以3开头; C站_9位数,以4开头; mini-C站_9位数,以4开头; Fleet F77_9位数,以76(语音)/60(数据)开头。2.非GMDSS设备: M站_9位数,以6开头; mini-M站_9位数,以76开头; F33/F55_9位数,以76(语音)/60(数据)开头。21. Which type of the following services is excluded from INMARSAT-F services?(C) A. telephone B. high speed data transmission C. telex D. E-mail22.

16、 The PIN becomes blocked if the PIN code is entered incorrectly several times when operating capsat F77 SES. The maximum of input is :_.(B) A. 4 B. 5 C. 6 D. 723. Which of the following statements about ISDN and MPDS is correct?(B) A. ISDN and MPDS is only available on fleet55 systems when the vesse

17、l is positioned in side an area with spot beam coverage. B. On fleet77 systems ISDN and MPDS are available in globe beam. C. On fleet77 and fleet55 systems ISDN and MPDS are available in globe beam. D. both B and C.24. Which of the following ID number is used for BEIJING LES telephone access code in

18、 AOR-E?(B) A. 118 B. 868 C. 311 D. 21125. The frequency of VHF CH16(unit: MHz) is _.(A) A. 156.8 B. 156.525 C. 156.560 D 156.326. Which terminal equipment of ship is for COSPAS-SARSATT system?(A) A. EPIRB B. INMARSAT-C C. SART D. EGC27. AN “area call” is usually applied to _.(D) A. VHF B. INMARSAT-C

19、 C. SART D. EGC28. What is the telex number of IOR in INMARSAT?(B) A. 582 B. 583 C. 872 D. 87329. Which of the following descriptions of usage is suitable for 3023 KHz frequency?(D) A. MSI B. RT C. NBDP D. AERO-SAR30. Which of the following is not a DSC calling content?(D)A. ACK BQ B. ACK RQ C. EOS

20、D. ARQ31. COSPAS-SARSAT is intended to be used for_ (A)A. Distress alarm and locating B. Daily communications C. Send messages D. E-mail32 Which of the fo11owing frequencies is NOT used for GMDSS?(A)A. 2182.5kHz B8414.5kHz C 16840.5kHz D 156.8kHz 33The VHF CH70 could be used to send _ (D) A Distress

21、 Call B A11 DSC Call C Safety Call D A+B+C34 What kind of transmission mode will be used in SSB voice communication?(D)A. A1A B G2B C F1B D J3E 36 The VHFCHl6 is called_.(D) ARoutine Channel BSafety Channel CUrgency Channel DDistress and Safety Channel37 The sea area A3 will be within the coverage o

22、f _ (C) AMF Coast Station BVHF Coast Station CINMARSAT Satellite DCOSPASSARSAT38 Which of the fo11owing frequencies is international distress and safety frequency on MF for radiotelephony?(A) A2182kHz B2187.5kHz C2177kHz D2414.5kHz39 How many frequencies designated for DSC international distress and

23、 safety Frequencies on HF band are _ ?(B)A 4 B 5 C 6 D. 740Urgency message should be preceded by_.(A) APANPAN BMAYDAY CSECURITE DSOS41. Terrestrial traffic system has the fo11owing equipment except(D) A DSC B NBDP C VHF TEL D PLB42. Which of the fo11owing equipment is not belong to GMDSS equipments?

24、(B) AEPIRB BGPS CDSC DINMARSAT F43 Which of the fo11owing equipment can DSC terminal equipment connect with?(B) A. NBDP B SSB C ELT D EGC44 The VHFCH70 could be used to send _.(D)A Distress Call B Urgent Call C Routine Call D A11 of the above45 In each NAVTEX message there is a technical code(B1B2B3

25、B4)Which character is the station identification?(A) A B1 B B2 C. B3 D B446. Which of the fo11owing descriptions of usage is suitable for 8414.5KHz frequency?(A) A Distress alerting frequency on HF DSC B Distress communication frequency on HF DSC C Distress alerting frequency on MF DSC D Distress al

26、erting frequency on NBDP47 DSC alerting distress frequency for Sea Area A2 is _.(B) A2182kHz B2187.5kHz C2182.5kHz D8414.5kHz48 The low po1ar orbiting satellite system provides the coverage of _.(D)A A1 B A1+A2+A3 C A4 D A1+A2+A3+A449 Radio beacon can be activated _ in case of distress(C) A。 automat

27、ically B manually C automatica11y or manually D No one of the above51 The equipment carriage requirement of the Ships of which sea area can be summarized as: carry VHF equipment and either a satellite EPIRB or a VHF EPIRB?(A) AA1 B.A2 C A3 DA453 Which service does not EGC have?(D)A N/W B. MSI C. Saf

28、ety NET D. FAX54 Where is the geostationary orbit of INMARSAT situated?(A) A equator orbit B po1e orbit C oblique orbit D. A&B55 Which frequency is used on line from CES to satellite in the INMARSAT SYSTEM?(B) A4GHz B6GHz C. 1.6GHz D1.4GHz56 COSPAS-SARSAT cannot fulfi11 the function of_.(B) A Distre

29、ss alert B Daily communications C1ocating D A&B57When must a ship be fitted With NAVTEX receiver?(B) A01 FEB 1992 B01 AUG 1993C01 FEB 1999 D01 FEB 199558“CHANGED ETD PILOT STN”means_.(B) AETD is not changed BETD has changed CETA has changed DETA is not changed59. What is AAIC of traffic system in Ch

30、ina?(C)ACN01 BCN02 CCN03 DCN0460.Which of the fo11owing description of usage is suitable for 2174.5kHz frequency?(A) AMF NBDP distress and safety traffic frequencyBMF TELEPHONE distress and safety traffic frequencyCMF DSC distress and safety call frequency，DHF NBDP distress and safety traffic freque

31、ncy，61.In the COSPAS-SARSAT system, the EPIRBs position can be determined by:_.(A)A. Doppler method B. GPS C. being entered manually D. none of the above62. In the DSC system, if the caller is in distress, which one is not included in the message?(B)A. the MMSI of the ship B. the call sign of the ship C. the position of the ship D. the nature of distress63. In GMDSS, which system can broad