相关题目
"If a GMDSS radio operator initiates a DSC distress transmission but does not insert a message，what happens?
"You are using VHF channel 16 (156. 8 mHz) or 2182 kHz. You need help but are not in danger. You should use the urgent signal().
" You are proceeding to a distress site. The survivors are in liferafts. What will make your ship more visible to the survivors? ().
"You are preparing to contain an oil spill. You must first receive approval from the Federal On-Scene Coordinator (OSC) prior to ().
"Which statement concerning locating signals in the GMDSS is FALSE?()
"A buoy marking a wreck will show a(an)（）.
"()is the process by which the position of the vessel at any moment is found by applying the last well determined position to the run that has been made since，using for this purpose the ship＇s course and the distance being those indicated by log.
"() means course which a vessel makes good over ground, after allowing for the effect of currents, tidal streams, and leeway caused by wind and sea.
"Speed of a vessel required for the passage through a canal, fairway, etc, called () .
"When a wind blows round clockwise, called().
