Every crew member shall participate in at least one abandon ship drill and one fire drill______. The drills of the crew shall take place within______ hrs of the ship leaving a port if more than 25% of the crew have not participated in abandon ship and fire drills on board that particular ship in the previous month.(1.0)
A.every week, 24 B.every month, 24 C.every week, 48 D.every month, 48正确答案B
