单选题 When it is advisable to remain on VHF channel 14 you should say .

单选题 You receive a call from the U.S. coast guard addressed to all stations. The call begins with the word Pan-Pan (3times). Which type of emergency signal would this be?

单选题 The following is a standard phrase.

单选题 Throw overboard of goods in order to lighten the vessel or improve its stability in case of an emergency defines .

单选题 Area which cannot be scanned by the radar of the vessel because they are shielded by parts of its superstructure, masts, etc means.

单选题 How should the number 1 be pronounced when spoken on the radiotelephone?

单选题 国际海事组织标准航海通信用语中信文标识“信息”用于 。

单选题 When it is accepted to remain on a VHF channel, say: .