單項選擇題What is TRUE about hoisting operations().

A.Personnel may work beneath suspended loads,as long as they are alert and wear hard hats
B.If a suspended load with no tag begins to spin,personnel should attempt to stop the spinning if the load is within reach
C.If tag lines are used to control a suspended load,they should be secured to the deck
D.Personnel not involved in the hoisting operation should be kept clear of the transfer area


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3.單項選擇題The purpose of the tripping line on a sea anchor is to().

A.Aid in casting off
B.Direct the drift of the vessel
C.Aid in its recovery
D.Maintain maximum resistance to broaching

4.單項選擇題The margin plate is the().

A.outboard strake of plating on each side of an innerbottom
B.outer strake of plating on each side of the main deck of a vessel
C.plate which sits atop the center vertical keel
D.uppermost continuous strake of plating on the shell of a vessel