单项选择题
On-scene communications will normally take place between（）.
A.ship in distress and assisting units B.NCS and RCC C.RCCs and “on-scene commander” or “coordinator surface search” D.ship in distress and coast station
单项选择题 （）will form the basis for distress alerting and safety calling.
单项选择题 Distress signal are always stored in the memory so as to start（）.
单项选择题 When the power of SART is on, it will（）.
