更多"International Navtex service means "的相关试题:
[单项选择]International SafetyNet and Navtex Services promulgate MSI by means of（）.
A. FEC and ARQ
B. satellite and terrestrial communications
C. radio and telex
D. NBDP
[单项选择]International Navtex service is（）.
A. a terrestrial MF system
B. a satellite communication system
C. a land HF radio system
D. a coastal VHF system
[单项选择]What language does International NAVTEX use?（）
A. Russian
B. French
C. English
D. German
[单项选择]The International SafetyNet Service is able to address the call to（）.
A. all vessels
B. selected groups of ships
C. a particular ship
D. A, B, C are all right
[单项选择]In NAVTEX service, the subject indicate character B means（）.
A. meteorological warnings
B. navigational warnings
C. search and rescue information
D. meteorological forecast
[单项选择]The WWNWS is a coordinated global service for the broadcast by radio of vital information on（）to marine navigation.
A. ship’s movement
B. safety
C. ship’s management
D. hazards
[单项选择]In NAVTEX service, VITAL warnings will（）by transmitting station.
A. be transmitted at once though the frequency is not clear
B. be transmitted as soon as the frequency is cleared coordinately
C. be transmitted at its scheduled transmissions
D. be transmitted at next scheduled transmissions
[单项选择]SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
A. DSC
B. EPIRB
C. EGC
D. NBDP
[单项选择]A vessel used for international service shall possess （）valid for duration of charter party showing winches and derricks in order.
A. International Cargo Gear Certificate
B. International Loadline Certificate
C. International Safety Construction Certificate
D. International Seaman Identification
[单项选择]The identification character of each Navtex station is regarded as（）to the messages.
A. the only preamble
B. a part of the preamble
C. the closing
D. the suspension
[单项选择]Navtex transmitter identification character（）is used to identify the broadcasts which are to be accepted by the receiver and those are to be rejected.
A. B2
B. B1
C. MAR
D. NNN
[单项选择]NAVTEX transmissions have a designed range of about（）nautical miles.
A. 300
B. 400
C. 500
D. 600
[单项选择]The principal advantage of NAVTEX radio warnings is that（）.
A. they can be used by mariners who do not know Morse code
B. only an ordinary FM radio is necessary to receive these warnings
C. information on a given topic is only broadcast at specified times
D. they cover a broad spectrum of the radio band allowing reception on almost any type of receiver
[单项选择]The distance between the two NAVTEX stations with the same B1 character should be not exceed（）nautical miles.
A. 400
B. 240
C. 450
D. 180
[单项选择]Which categories of NAVTEX messages may not be selectively rejected through receiver programming?（）
A. Navigational warnings
B. Weather warnings
C. SAR and distress alert information
D. All of the above
[单项选择]A major advantage of the NAVTEX system when compared to other systems is that（）.
A. the information can be received on an ordinary FM radio
B. warnings are printed out for reading when convenient
C. broadcasts are at scheduled times
D. a low frequency band is used for long distance transmission
[单项选择]A Navtex station in each NAVAREA is usually allowed to have（）for transmission.
A. 10 minutes every 4 hours
B. half an hour every other hour
C. irregular period of time
D. 5 minutes every two hours
[单项选择]The NAVTEX receiver can be mounted on（）.
A. on the bridge
B. in the coast station
C. on the forecastle
D. on starboard side
