单项选择题
A.Distress messages should first be transmitted on 2182 kHz
B.It is advisable to follow a distress message on 2182 kHz by two dashes of 10 to 15 seconds duration
C.If no answer is received on the designated distress frequencies，repeat the distress call on any frequency available
D.Channel 16 (156.8 MHz) may be used for distress messages
单项选择题 Which shipboard equipment will detect a signal from a SART?（）
单项选择题 Which of the following steps should normally be taken first by those who have boarded a liferaft in an emergency situation?（）
单项选择题 Which list is NOT required to be provided as part of the appendices of the Shipboard Oil Pollution Emergency Plan?（）