超星 - 英语阅读9 - 查题吧

单选题

The followings are used in the GMDSS except _________.

A. the Inmarsat system
B. VHF， MF and HF DSC systems
C. the Cospas-Sarsat system
D. AIS systems

单选题

Which one of the following keystrokes or characters is sent as part of ARQ communications to switch information transmission control from one station to the other?

A. The plus and question mark keys ('+?')
B. The 'ENTER' key
C. The go-ahead (GA) command
D. The 'END1 key

单选题

Ships sailing in _________ are able to receive and print out EGC messages.

A. a fixed area or NavArea in any ocean region
B. a NavArea or weather forecast area
C. area covered by Inmarsat satellites
D. anywhere of the world

单选题

For COSPAS-SARSAT system, _________ usually transmit initial COSPAS-SARSAT alert.

A. RCC
B. MCC
C. EPIRB
D. MRCC

单选题

All the distress message should be preceded by _________

A. PAN PAN
B. SECURITE
C. MAYDAY
D. MEDICO

单选题

_________ is (are) frequency (frequencies) can be used for routine DSC calling between ships, and between ship and shore respectively.

A. 2177 kHz.
B. 2177 kHz and 2189.5 kHz used in pairs only.
C. 156.525 Mhz.
D. 2177 kHz/2177 kHz and 2177 kHz/2189.5 kHz used in pairs.

单选题

The frequency 2174.5 kHz in NBDP service is used for _________.

A. Distress and safety traffic using narrow-band direct-printing telegraphy exclusively
B. Transmissions of information regarding the safety of navigation and weather warnings
C. Distress and safety traffic in radiotelephony
D. Transmissions of the international NAVTEX system

单选题

In general terms, all the media listed below are used to receive MSI, except _________.

A. The international NAVTEX system.
B. The Inmarsat Safety NET system.
C. HF NBDP.
D. GLONASS receivers at sea.

单选题

_________ may be provided by Inmarsat Standard-C via traditional facsimile service.

A. Transferring texts
B. Transferring voices
C. Transferring images
D. Transferring pictures

单选题

On receipt of a relayed distress alert, ships in the area addressed should establish communication with the concerned to enable the assistance to be coordinated.

A. SAR
B. RCC
C. MSI
D. FEC

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