A.boat fall
B.fairlead
C.riding pawl
D.topping lift
您可能感興趣的試卷
你可能感興趣的試題
A.block used only with manila rope
B.chock roller
C.hinged block
D.strong block used for short，sharp pulls
A.batten
B.bench hook
C.awl
D.fid
A.decreases the size of the line
B.should be used if the line is going through a block
C.should only be used in wire rope
D.doubles the size of the line
A.hoisting a windsail
B.parcelling
C.sewing canvas
D.testing canvas
A.make a temporary eye
B.mouse a hook
C.secure a line around a spar
D.shorten a line
最新試題
A whipping on a fiber line（）.
The square knot is used for（）.
Limit switches on gravity davits should be tested by（）.
The only wire rope termination which may be made in the field is（）.
A stopper used in securing the ground tackle for sea that consists of a grab attached to a turnbuckle is a（）.
At the instant when a string of casing being run from a ship is landed in the well head,（）.
The rope which is the lightest is（）.
The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.
In securing a towing cable，consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by（）.
Neglecting friction，you desire to lift a 300 kgs weight with a stress on the hauling part of 100 kgs.Which of the following tackles would you use?（）.