题目内容

Which of the following MF frequencies is internationally allocated for use for transmitting NEVTEX-type broadcasts?

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.

查看答案

搜索结果不匹配？点我反馈

更多问题

What information is promulgated by the international SafetyNET?

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

Which one of the following frequencies is used in national service of China?

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

How many NAVAREAs are there in the world?

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

What service was established by IMO and IHO for the purpose of coordinating the transmission of navigational warnings to ships in coordinated geographical areas?

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