A.Using a medium graphite grease as a lubricant
B.Operating a winch too slow
C.Using a sheave with an undersized throat
D.A sheave diameter of 24 times the wire's diameter
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A.Detachable
B.Open
C.Pear shaped
D.Stud link
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
最新試題
You are operating a lift boat.When beginning to jack down you should（）.
Which type of link is generally used to connect shots of anchor chain（）.
Which will cause a wire rope to fail（）.
The vessel or other goods upon which the Works have been carried out must be（）from the Repairer’s worksite within 3 days after the invoice date or in accordance with other written notification by the Repairer to the Customer.
Which tackle arrangement has the LEAST mechanical advantage（）.
The tweendecker has（）below the main deck.
What term indicates the line drawn at the top of the flat plate keel（）.
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（）.
The margin plate is the（）.
When lowering lifeboats in heavy seas，a good practice is to rig frapping lines（）.