超星 - 作业（九）

单选题

Which satellite system promulgates Maritime Safety Information?

AMVER.
B. NAVTEX.
C. SafetyNET
D. Inmarsat-M SES.

单选题

A. VHF.
B. MF / HF.
C. Inmarsat.
D. NBDP

单选题

A. Inmarsat SafetyNet
B. GMDSS sea areas
C. International Vessel Traffic Service
D. Inmarsat Ocean Regions

单选题

A. NAVTEX
B. SART.
C. EPIRB.
D. Inmarsat-B.

单选题

A. 518 kHz using FEC mode.
B. 4. 209. 5 kHz using FE mode.
C. 486 kHz using FBC mode in China.
D. All of the above.

单选题

A. Traffic Lists.
B. Priority Messages.
C. MSI.
D. MERSAR.

单选题

A. 462 kHz
B. 486 kHz
C. 490 kHz.
D. 500 kHz.

单选题

A. 4
B. 6
C. 21
D. 24

单选题

A. NAVAREAs.
B. NAVTEX.
C. WWNWS.
D. MSI.

单选题

A. NAVTEX system and EGC in Inmarsat system.
B. HF weather facsimile.
C. RT in SSB, AM and FM modes.
D. All of the above.