GMDSS理论英语题库(12)

湖 北 交 通 职 业 技 术 学 院

A coming into effect B moving to effect C bein g based on force D coming into force 答案 C

333. The ARQ mode should be applied____

A when two stations communicate with each other B in any radio system and at any time

C when one ship sends a message to another station D for communication among some stations 答案 A

334. The FEC mode is for ____from____ station to two or more other stations when available.

A receving messages/one station

B transmission/one coast station or ship C communicating/one ship D contacing/other 答案 B

335. What should be made known in the lists of coast and ship stations?

A the services of the stations open to public correspondence B the information on charging C what kind of the public correspondence D A and B 答案 D

336. The first communication satellite was used for the purpose of____ A taking the place of the radio system B introducing a new life-saving system C saving the vessels in distress

D improving the communication on land 答案 D

337. traditional and terrestrial techniques____

A can overcome the basic flaws of the radio system B are useless today C now are out of date

D are impossible to overcome the flaws in the exising radio systerm 答案 D

338. What does “the existing system “mean?

A a radio system using traditional ,terrestrial techniques B the satellite communication system C a global system operated by INMARSAT

D a modern system transforming the global communication 答案 A

339. what is the advantage when using the satellites?

A the message can be directed to the desired location B the message can follow the earth’s curvature

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湖 北 交 通 职 业 技 术 学 院

C the quality of message can not be affected by climatic D the rang of the message extend and the quality of reception is improved 答案 D

340.. Radio system has so many principle problems which____

A can be tackled by traditional and terrestrial techniques B can be solved by satellite communication

C can be tackled by some other techniques except satellites D can hardly solved by any other techniques 答案 B

340. Traditional and terrestrial techniques____

A can help the radio system to overcome its drawbacks B are unable to perfect the existing system C are out date

D are useless to the radio system 答案 B

341. What do the general radio communications relate to? A management of ship B operation of ship C safety of ship D ABC are all right 答案 D 342. What channel is general communication used? A any appropriate channel expect public communication B any appropriate channel expect for public communication C any appropriate channel besides public communication D any appropriate channel beside public communication 答案 C 343. Can MF/HF radiotelephone receive the MSI from COMSPAS-SARSAT along? A no, it receives the MSI from ship stations B Yes, it can

C only with NBDP terminal ,can it receive the MSI from coast stations D no, it can not receive the MSI sent from station 答案 D

344. What shall all stations do when receiving distress alert? A to relay it to the SAR …… 此处隐藏：992字，全部文档内容请下载后查看。喜欢就下载吧 ……