As required by COLREGs, all ships shall _________a proper radar lookout if it is available on- board to obtain early warning of risk of collision.(1.0)
A.take B.maintain C.make use of D.give正确答案B
As required by COLREGs, all ships shall _________a proper radar lookout if it is available on- board to obtain early warning of risk of collision.(1.0)
A.take B.maintain C.make use of D.give正确答案B
