单项选择题
A.Original course B.Initial course C.Final course D.Designated course
The commander of a rescue unit designated to co-ordinat...
单项选择题The commander of a rescue unit designated to co-ordinate search and rescue operations within a specified area is the（）.
A.General commander B.Commander general C.Search commander D.On-scene commander
Stop search and return to（）.A.keelB.virginC.originD.bas...
单项选择题Stop search and return to（）.
A.keel B.virgin C.origin D.base
The International Regulations for Preventing Collisions...
单项选择题The International Regulations for Preventing Collisions at Sea（）while carrying out search and rescue operation.
A.apply fully B.apply half C.apply in part D.not apply
