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单选题
All stations which receive a distress alert shall immediately cease（）.
A
any transmission
B
any harmful transmission
C
to use radiotelephone
D
using radiotelephone
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Which two statements describe the operation of the CSMA/CD access method, which is in use on the Ezonexam network? (Choose two)A. After a collision, the station that detected the collision has first priority to resend the lost data.B. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.C. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.D. The use of hubs to enlarge the size of collision domains is one way to improve the operation of the CSMA/CD access method.E. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.F. After a collision, all stations involved run an identical backoff algorithm and then synchronize with each other prior to transmitting data.
考题
Which categories of NAVTEX messages may not be selectively rejected through receiver programming ________．A.Navigational warningsB.Weather warningsC.SAR and distress alert informationD.All of the above
考题
What is meant by the term“radio silence”________．A.Stations not directly involved with the on-going distress communications may not transmit on the distress frequency or channelB.Stations remaining off the air to safeguard proprietary informationC.Two three-minute silent periods，at 15 and 45 minutes after the hour，that provide a transmitting“window”for distressed vessels to transmit distress alerts using J3ED.Communications on a distress frequency or channel is banned for 24 hours following the cessation of the distress traffic
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Which action should be taken on receipt of a GMDSS distress alert ________．A.Read the display screen and/or printoutB.Silence the alarmC.Listen for any follow up voice/telex transmission on the appropriate frequencyD.All of the above
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ALL PASSENGERS OF DECK NO.2 ARE REQUESTED TO FOLLOW THE CREW MEMBERS WHO WILL ESCOPT YOU TO YOUR ASSEMBLY STATIONS. From this sentence you can concluded that the vessel is in ______.A.immediate danger to collide with another vesselB.a situation in which more passengers will embark on boardC.berth and ready to disembark her passengersD.Distress
考题
单选题What is the action that a GMDSS Radio Operator should take when a DSC distress alert is received? （）A
No action is necessary，as the DSC control unit will automatically switch to the NBDP follow-on communications frequencyB
The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was receivedC
The Operator should immediately set continuous watch on VHF channel 70D
The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received
考题
单选题The officer in charge of the deck watch in port shall not（）.A
make rounds to inspect the ship at appropriate interalsB
take every precaution to prevent pollution of the environment by the shipC
enter, in the bell book, all important events affecting the shipD
offer assistance to ships or person in distress
考题
单选题If a DSC distress relay is transmitted from coast station , it will（）.A
indicate the ship in distress that the alert has been receivedB
alert ships in the area of a distress incident that a distress has occurredC
inform other coast station of distress incidentD
repeat the distress alert in 5 minutes
考题
单选题The distress alert should（）the ship in distress.A
identityB
identicalC
identifyD
identification
考题
单选题The basic concept of GMDSS is（）.A
Search and rescue authorities ashore will rapidly received an distress alert and acted uponB
SAR units will be rapidly alerted to a distress incident and assist in a coordinated SAR operationC
Ships navigating in the immediate vicinity of the ship in distress will rapidly alerted to the alert and give their help accordinglyD
The RCC will rapidly alerted to a distress alert through satellite and terrestrial communication techniques and conducted a rescue operation immediately
考题
单选题Please use（）for（）.A
English/all distress communicationsB
Chinese/some distress callsC
the language decided by Administration/all distress callsD
Japanese/some distress alerts
考题
单选题Which system may be useful for messages，such as local storm warnings or a shore-to-ship distress alert，for which it is inappropriate to alert all ships in the satellite coverage area?（）A
NAVTEXB
EGCC
AMVERD
DSC
考题
单选题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
assistB
send a rescue vesselC
search the distress areaD
reach the distress position at once
考题
单选题What shall be conducted during a fire and boat drill?（）A
All watertight doors which are in use while the vessel is underway shall be operatedB
All lifeboat equipment shall be examinedC
Fire pumps shall be started and all exterior outlets openedD
All of the above
考题
单选题When receiving a distress alert, the SAR authorities ashore and the ships in the vicinity of the ship in distress will（）soonest.A
reach the distress areaB
conduct a sector searchC
send rescue vesselsD
assist coordinately in SAR operation
考题
单选题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
assistB
send a rescueC
search the distress areaD
Reach the distress position at once
考题
单选题Which channel and mode should be used when initiating a distress alert transmission（）.A
Channel 6 DSCB
Channel 6 RadiotelephonyC
Channel 13 Radiotelephony and channel 16 DSCD
Channel 70 DSC
考题
单选题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 weakD
They are not in charge of search and rescue
考题
单选题（）, which consisted of seven short blasts and one prolonged blast, all passengers have to go to their assembly station.A
When the distress alert is soundedB
When the emergency equipment is switching onC
When the general emergency alarm is soundedD
When the distress broadcast is sounded
考题
单选题Which categories of NAVTEX messages may not be selectively rejected through receiver programming?（）A
Navigational warningsB
Weather warningsC
SAR and distress alert informationD
All of the above
考题
单选题The advantage of geostationary satellites is（）.A
the range of antenna can cover everywhere in the worldB
we can know the ship’s exact positionC
that the distress alert can be located as soon as possibleD
antenna of permanent earth stations may be directed towards fixed points in the sky
考题
单选题Which EPIRB transmits a distress alert that is received and relayed by an INMARSAT satellite?（）A
Class A EPIRBsB
Class B EPIRBsC
L-Band EPIRBsD
Category I EPIRBs
考题
单选题What information will a distress alert contain?（）A
nature of distressB
type of assistance requiredC
course and speed and time at which the information was recordedD
A, B, C are all right
考题
单选题Which action should you take after sending a false distress alert on VHF?（）A
Send a DSC cancellation message on Ch-70B
Make a voice announcement to cancel the alert on Ch-16C
Make a voice announcement to cancel the alert on Ch-13D
Make a voice announcement to cancel the alert on Ch-22A
考题
单选题You receive a call from the MSA OF CHINA addressed to all stations. The call begins with the words Pan-Pan (3 times). Which type of emergency signal would this be?（）.A
Safety signalB
Urgency signalC
Distress signalD
Red alert signal
考题
单选题Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.A
exchangeB
to exchangeC
exchangingD
exchanged
考题
单选题What does the DSC control unit do if the GMDSS radio operator fails to insert updated information when initiating a DSC distress alert?（）A
It will abort the transmission and set off an audible alarm that must be manually resetB
It will initiate the DSC distress alert but，as no information will be transmitted，rescue personnel will not be able to identify the vessel，its position or its situationC
It will initiate the DSC distress alert and default information will automatically be transmittedD
It will initiate the DSC distress alert，but any station receiving it will have to establish contact with the distressed vessel to determine its identity，position and situation
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