A.Instruction. B.Advice. C.Warning. D.Information.
A.SRCC B.MRCC C.MRSC D.OSC
A.漂移、漂流、走錨、拖錨 B.漂流、漂移、走錨、拖錨 C.漂流、漂移、拖錨、走錨 D.漂移、漂流、拖錨、走錨