A.Nearest Oceanographic office B.The Marine Safety Center at Coast Guard Headquarters C.National Ocean Service D.Nearest Officer in Charge，Marine Inspection
A.route B.track C.heading D.course over the ground
A.only after two hours in the water B.only after four hours in the water C.before entry into the water D.upon entry into the water
A.slip B.sidewise force C.rotational force D.thrust
A.prevent chain from clinging to the wildcat B.clean the marine debris from the chain C.flake chain from a boat's chain locker D.clean chain prior to an x-ray inspection
