GMDSS英语练习

(3)What does PPI possibly mean in this passage? A.People Population Indication. B.Plan Position Indicator. C.Person Please Inform. D.Put Per Information.
(2)How will the signal become circle completely? A.When the radar is large. B.When the SAR vessel sails further away. C.When the power supply is switched off. D.When the distance between SAR radar and SART is about 1 nm.
(4)The shore Inmarsat user can only use ______. A.a few CESs within his ocean region B.that associated CES for a certain ocean region C.a number of CES inside and outside his area D.those CES which are most suitable for him
GMDSS通信英语 新题目练习
Safety EGC Received message/REF: MSG-E3097NAV WARNING NO: 05/2006 17.04.06. FROM VIKRAM SARABHAI SPACE CENTRE.ROCKET LAUNCHINGS ARE SCHEDULED FROM THUMBA POSITION 8 DEG 31MIN 59 SEC NORTH 76 DEG 52 MIN 03 SEC EAST DURING THE MONTH OF MAY 2006. DANGER ZONE ONE IS A SECTOR OF RADIUS 5 NM FROM THE LAUNCHER BETWEEN AZIMUTH ANGLES 190 DEG AND 300 DEG.DANGER ZONE TWO IS A SECTOR OF RADII 45 NM AND 75 NM BETWEEN AZIMUTH ANGLES 220 DEG AND 260 DEG.THE DANGER TIME EXISTS FOR ZONE ONE AND TWO BETWEEN 1900 AND 2230 HRS (INDIAN STANDARD TIME) ON 3 RD, 4 TH, 10 TH, 11 TH, 17 TH, 18 TH, 24 TH, 25 TH, AND 31 ST MAY 2006.MARINERS ARE ADVISED TO KEEP WELL CLEAR THE ABOVE MENTIONED AREAS DURING THE PERIOD.ISSUED UNDER THE DIRECTIVES OF NS DDG (TECH).DG(S) COMMCENTRE, DIRECTORATE GENERAL OF SHIPPING.EMAIL: DGCOMMCENTRE AT SATYAMMAIL.NET.PHN: 91-22 22610606, 261464690-01-03 05:41
A.① B.② C.③ D.①②③
For ships equipped with an Inmarsat SES, sending a distress alert is both simple and certain. It only involves pressing a special distress button or using an abbreviated dialing code. This automatically gives priority access to the system and establishes contact with a CES via the Inmarsat satellite. The SES operator can choose the most suitable CES for the communication service required, as long as the CES is within the same ocean region as the SES. The shore Inmarsat user does not have the flexibility and is limited to using the CES through which his local PTT administration has a routing agreement for a particular ocean region.
(1)This passage mainly talks about ______. A.the display SART signal on radar screen B.the activation of a SART C.the important parameters of the SART D.a SART information from pulses
(3)Any ships with SES can ______ and ______ through the Inmarsat satellites when sending a distress alert. A.establish contact with the system / contact with RCC B.enter the system gradually / contact a coast station C.enter the system manually / contact with any CES D.have absolute priority to enter the system / contact a CES
பைடு நூலகம்
(4)To detect the SART signal easily, what range scale(s) of radar is recommended by the author?
A.No applicable. B.3 nm. C.6 nm. D.48 nm.
A reserve source or sources of energy shall be provided on every ship, to supply radio installations, for the purpose of conducting distress and safety radio communications, in the event of failure of the ship's main and emergency sources of electrical power. The reserve source or sources of energy shall be capable of simultaneously operating the VHF radio installation required by regulation 9.1.1, the MF/HF radio installation required by regulation 10.2.1 or 11.1, or the Inmarsat SES required by regulation 10.1.1 and any of the additional loads mentioned in paragraphs?
(3)Which service does the message belong to? A.FleetNET service B.NAVTEX service C.SafetyNET service D.Weather Facsimile service
(4)What areas are dangerous to mariners? ①A sector of radius 5 nm from the launcher between azimuth angles 090 deg and 130 deg②A sector of radii 45 nm and 75 nm between azimuth angles 220 deg and 260 deg③A sector of radii 45 nm and 75 nm between azimuth angles 120 deg and 160 deg
(1)What category does the message belong to?
A.Meteorological waning B.Weather forecast C.Navigational warning D.Ice report
(2)What is the subject matter of the passage? A.Missile launching exercises B.Fire fighting drills C.Rocket launchings by Vikram Sarabhai space centre D.Spaceship launching from Thumba
(1)The SES operator cannot set up communication via a CES, ______ it's within the same ocean region as the SES.
A.once B.if C.unless D.when
(2)It is quite ______ for SES operator to send a distress alert. A.difficult and stable B.easy and expensive C.easy and reliable D.possible and compulsory
When activated in a distress situation, a SART responds to radar interrogation by transmitting a swept frequency signal which generates as a line of 12 blips code on a radar screen outward from the SART's position along its line of bearing. Displayed on the PPI, the spacing between each pair of dots will be 0.6 nautical miles. In order to distinguish the SART from other responses it is preferable to use a radar scale between 6 and 12 nm, this will assist in differentiating between the SART and other responses. As the search craft approaches to within about 1 nautical mile of the SART, the blip dots will change into wide arcs, and even become complete circles as the SART is closed and becomes continually triggered.