GMDSS英语单选题目

1、1. regarding distress alerting under gmdss， c_ is true>a. the time information included in distress alert is the time when the incident occurs.b. ship to ship distress alerts are used to alert ships in the vicinity of navigational hazards and bad whether.c. the time information include in the dis

2、tress alter is the time when the position information is updated.d. the vessel nearest to the emergency must notify the coast guard before leaving the vicinity.2. the radio equipment to be carried on boardgmddd ship depends uponca. the tonnage of the ship.b. the type of the ship.c. the sea area in w

3、hich the ship operates.de the horse power of the ship.3. the auto-operation of the satellite epirb isnormally controlled by _c_a. the switch on the top of it.b the battery uni仁c. the mercury switch in the battery uni仁d. sea condition4. the mobile number of standard c ses is compose ofba. the vesseps

4、 call sign *b. nine digitsc. the selective calling numberd. five unique digits tones 5 which of the following frequencies have been designated for on-scene communications in the gmdss? da vhf fm ch16,156.8mhzb. hf radiotelephony on 21.820mhzc. nbdp on 2175.4khz, vhf fm ch16 156.8mhzd. vhf fm ch16 15

5、6.8mhz , nbdp on 2174.5khz6. c is the priority mark ofrt-acknowledgement of mf-dsc alerta. mayday acknowledgementb. distressc. maydayd. distress acknowledgement7. _chave not been designated for on-sensecommunication in the gmdss.a. vhf radiotelephone on channel 16b. mf radiotelephone on 2182 khzc. n

6、bdp on 2182.0 khzd. vhf radiotelephone on channel 16 and mf radiotelephone on 2182 khz8. the modulation type of _b_ should normally be used for a general radiotelephone connection.a. h3eb. j3ec. r3ed. fib9. regarding navtexb_ is true.a. gmdss operators can program the navtex receiver to automatic re

7、ject any category of messages under the master authority.b the gmdss operator can program the navtex receiver to reject all messages except navigational warnings meteorological warnings, and search and rescue information.c. the gmdss operator can not reject any category of messagesd. upon entering a

8、 new navtex station coverage the gmdss operator should enter the station selcall number.10. which of the following statement is true? ca. navte stations have same transmission power.b. navte stations can transmit at the sametimec. navte stations have the different identihcation character in each nav

9、area>d. there are 24 navtex stations in each navarea.11. what does a dsc control unit do when adsc massage is received? ca. when receiving distress，urgency and safety dsc call，the control unit will be able to provide an automatic transmission to acknowledge the call received.the information conta

10、ined in the dcs massage will be decoded but not displayed on the front panel and may be stored in an internal memory.c. an audio alarm will sound only when a dsc distress alert is received.d. who received routine messages，the control unit may provide an automatic transmission to acknowledge the call

11、 received.12. the services of coordinated broadcast and automatic reception on the frequency *of msi by means of nbdp telegraphy using english language is a _c_ service.a. msib. navtexc. international navtexde navigational warning13. radiotelephony communication or radio telex communication or both

12、will be carried out by terrestrial or satellite means, _c_ the equipment fitted on ship and the area in which the incident occurs.a. depend onb. depending onc. dependent ond. depended on14. a distress alert can be relayed from an rccby _ba. major coast stationsb. satellite and terrestrial communicat

13、ionsc. mf/hf and vhf stationsde cospas-sarsat.15. regarding the reason why functional test ofa sart should be minimized, the choice ais not truea transmit will interfering with the safety navigationb发射时间要短c发射功率要低d transmit will interfering with the air bone radar16. inmarsat-c egc support da. safety

14、net servicesb> fleetnet servicesc. safety net services and inmarsat system in formationsde safety net services, fleet net services and inmarsat system in formations17. _cis the orbit of a geosynchronoussatellite whose circular and direct orbit lies in the plane of the earths equator and it is app

15、roximately 35700 kilometers above the equater.a. polar orbitb. gps satellite orbitc> geostationary satellite orbitd. the north and south poles18. a radio link between transmitting earth station and a receiving earth station through one satellite is named a _c a. radio link.b space segmen仁c. satel

16、lite linkd. upper link19. whafs the meaning of dhsd in gmdss?aa. duplex high speed datab. departmentof homeland security indominationc. digital high schoolde data handling system department20 the cospas-sarsat system, _c transmit distress alert and location information to appropriate rescue authorit

17、ies all over the world.a. polar orbiting satellitesbe ground receive stationsc. mccd. rcc21. the gmdss includes two subsystems: satellite system andca. gps system.b. navtex systemc. terrestrial radio systemd. dsc system.22. which frequency does cospas-sarsatepirb use for transmission of distress sig

18、nal? aa. 406 mhzb. 156.525 mhzc. 1.6 ghzd. 121.5 mhz23. _b will normally provide sufficient information to seaward of the fairway bouy or pilot station.a. navarea warningsbe coastal warningsc. local warningsd. meteorological24. _ashould be include in a dsc distressalert.a. identification of station

19、in distress, the nature of accident and its position.identification of station in distress and call sign.ce identification of station in distress and the number of crew members.d. identification of station in distress and thekind of help required.25. what do the general radio communications relate t

20、o? ©management of shipoperation of shipsafety of ship.dab.26. the b_subject cannot be disabled by the operator of a navtex receiver.a. meteorological forecasts.b. navigational warningsc. satnan messagesd. pilot service messages.27. which of the following frequency is as international distress a

21、nd safety frequencies on mf for radiotelephony? da.2178.5 khzb 2174.5 khzc. 2177.5 khzd. 2182 khz28. when you are browsing news on inter net by inmarsat-f terminals which service should be selected? ca. fax.b. telexc. mpdsd. hsd29. it is _cfor mariners combine the sartwith a float-free satellite epi

22、rb.a. essential.b compulsory.c. optional.d. inadvisable.30. terrestrial traffic system has following equipmentda. inmars at-ab. inmars at-bce inmars at-cd.vhf device and mf/hf equipment.31. if a vessel is operating 10 nautical miles fromshore, it is operating within the sea areaba. a2bi，m not sure&g

23、t;c. ald. a332. the task ofccan not be executed bythe holder of restricted operator certificates.a. resetting tipped circuit breaker or replacing defective fuse.（保险丝）b. routine battery maintenance, if used as part of the gmdss stationc. any adjustment of maintenance which may affect the proper opera

24、tion of the station.de replacement of consumable item such as paper, ribbon，etc 33. which action is the most appropriate action for gmdss operator to take in a distress situation where immediate help is needed, but the vessel is not sinking nor need be abandoned? ba. switch off epirb and sart manual

25、lyb. transmit distress call by hf/mf/vhf dsc or inmarsatc. notify the rcc through vhf on channel 11d. transmit distress call by activating the radiotelegraph automatic alarm signal34. which is incorrect item of gmdss equipment weekly test? ca. the proper operation of the dsc facilities shall be test

26、ed by means of test call, when within communication rang coasts station fitted with dsc equipments.b. where the reserve source of energy is not a battery the reserve source should be test.c. where a ship has been out of communication range of a coast station fitted with dsc facilities for a period l

27、onger than a week，a test call should be made on the first coordinately the ship is in communication rang of such a coast station.d. check the battery that is providing a source of energy for any part of the radio station.以前回忆题目: 一.单项选择1. what does itu stand for? (b)a. the international telephone uni

28、onb.the international telecommunication unionc. the international telecommunication unit d. the international telex unit2. the rescue co-ordination center may _don stations which interfere with distress traffic.a. keep silenceb.forbid transmissionc. change informationd.impose silence3. what is the a

29、bbreviation for the world meteorological organization? aa. wmo b. iho c. imo d. warc4. distress traffic is the communication betweenthe station in distress and the ships，aircrafts coast radio stations, coast earth stations and rescue centers _ ain the rescue work.a. participating b. participated c.

30、participate d. to participate5. distress and safety communications _cdsc calling will be performed by radiotelephony or narrow-band direct-printing or both.a follows b. to follow c. following d. to be followed6. _da distinct humming should be heardon the loudspeaker.a. when the distress alarm is sou

31、ndedb. when the emergency communication receiver is tuned onc> whenever an emergency call is transmittedd. when a distress message is received7. for sar operations it should be possible to transmit messages in _cdirections.a. one double c. both d. four8. the present inmarsat system _dgeostationar

32、y satellites positioned above the atlantic ocean.a. use b ignores c. considers d. utilizes9. we _b_ a sharp lookout while we were sailing in the icy watera. keep b. kept c. are keeping d. have kept10. msi is received by ships on a designatedchannel “designated” means _ba allocated b> appointed c.

33、 designed d. specialized11. the first communication satellite was used forthe purpose ofd_a. taking the place of the radio system b. introducing a new life-saving systemc. saving the vessels in distress d. improving the communication on land12. tradition radio system has so many principleproblems wh

34、ich _ b。a. can be tackled by traditional and terrestrial techniquesb can be solved by satellite communicationsc. can be tackled by some other techniques except satellitesd. can hardly solved by any other techniques13. according to the basic concept of gmdss，_d can be rapidly alerted to a distressinc

35、ident.a only sar authorities on landb. all ships in a very large sea areac. the nearest coast stations and port radiosd. the sar authorities ashore as well as ships navigating in the vicinity of the casualty14. ships equipped with inmarsat ses send distress alerts both _b_ a. quick and good b. conve

36、nient and certainc. easily and simply d. important and difficult15. ships in sea areas a3 and a4 will transmit _d_， as appropriate.a. a ship to ship alert on mf/vhf b. a ship to shore alert by ses/hf dscc. a ship to shore alert by satellite epirb d. all of a, b,c16. the gmdss has _ bmain functions.a

37、. 4 be 9c.7d.517. when receiving a distress alert，the sarauthorities ashore and the ships in the vicinity ofthe ship in distress will _dsoonesta. reach the distress area b. conduct a sector searchc. sand rescue vessels d. assist coordinately in sar operations18. in addition to meeting the requiremen

38、t of sea area al，every ship engaged on voyage in sea area a2 shall be provided with _a_a mf radio installation with dsc b. sesc. mf/hf radio-telephony installation d. 2187.5khz watch receiver19. an area within the coverage of at least one vhf shore station in which continuous dsc alerting is availab

39、le is _a_ a. sea area al b. sea area a2 c. distress area d. gmdss areas20. _dare used for distress alerting as a rule.a. ses/dsc/epirb b. sart/radiotelephonec. cospas-sarsat d. both a and c21. _b_ means rapid and successful reporting of a distress incident to a unit which can provide or coordinate a

40、ssistance.a. distress message b. distress alerting c. safety calling d. digital selective calling22. the gmdss is composed of _aa. satellite and terrestrial communication systems b. only navigation and alerting systemsc. just msi system and locating system d. sar co-ordination system23. the satellit

41、es over the major ocean regions cover the globe d a. besides the polar regions b. including the north pole and the south polec. above 70°n and 70°s d. as far north and south as 70°24. _d_ are operated as a secondary method of alerting in the gmdssa. satellite epirbs b. non-satellite e

42、pirbsc. ses and dsc d.a + b25. the gmdss is to provide _dwith reliablecommunication*a. all large passenger vesselsb. freighters of more than 300gt in coastal waters.c. all passenger ships and cargo ships engaged in international- voyages.d. all passenger ships and cargo ships of 300gt upwards26. the

43、 gmdss enables distress alerting and its relays to be transmitted in _d_ directions.a. ship to ship b. ship to shore c. shore to ship de all of a，b，c27. for ship to shore distress alerts we can usea. inmarsat epirb and dsc b. nbdp and r/t c. satellite d. rc28. according to the basic concept of the g

44、mdss，distress alerting can be sent by _a_ to sar authorities ashore or ships in vicinity of a distress incident.a. either satellite or terrestrial communication only satellite communicationc. only terrestrial communication d. vhfdsc orses29. for ship-to-shore distress alerts, you canuse_aa. inmarsat, epirb and dsc b. navtex, nbdp and r/tc. inmarsat, vhf and sart d epirb, dsc and radar30. what following is not among the functions ofsolas ships? ca receive shore to ship distress alerting b tr