A.Detachable
B.Open
C.Pear shaped
D.Stud link
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A.Single whip
B.Gun tackle
C.Luff tackle
D.Twofold purchase
A.A line led forward from the bow
B.A line led aft from the bow
C.A line led in the same direction as the keel
D.A line led at a right angle to the keel
A.on only the forward falls
B.on only the after falls
C.with a lead of about 45 degrees to the boat
D.from the falls to the main deck of the vessel
A.Base line
B.Molded line
C.Designer's waterline
D.Keel line
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
最新試題
You are operating a lift boat.When beginning to jack down you should（）.
The usual method of arranging a line on deck so that it will run out easily without kinking or fouling is（）.
You are handling a mooring line and are instructed to Check the line.What should you do（）.
The lifeboats on your vessel are stowed on cradles on deck and are handled by sheath-screw boom davits. Which of the following statements about launching a boat is TRUE?（）
Which will cause a wire rope to fail（）.
The margin plate is the（）.
The margin plate is the（）.
You have been towing astern and have just let go the tow.Your deckhands are pulling in and faking the towline by hand on the stern.The most dangerous action to take is to（）.
You must ensure that lifesaving equipment is（）.
Which tackle arrangement has the LEAST mechanical advantage（）.