更多"The tackle that raises and lowers t"的相关试题:
[单项选择]A tackle by which the outer end of a boom is raised and lowered is the topping().
A. Boom
B. Lift
C. Raise
D. Tackle
[单项选择]Which tackle arrangement has the LEAST mechanical advantage().
A. Single whip
B. Gun tackle
C. Luff tackle
D. Twofold purchase
[单项选择]A boom vang().
A. holds the boom down and flattens the main sail
B. draws the head of the sail to windward
C. tautens the standing rigging
D. douses the gaff topsail
[单项选择]The standing part of a tackle is().
A. all the fall except the hauling part
B. the hook that engages the weight to be moved
C. that part to which power is applied
D. that part of the falls made fast to one of the blocks
[单项选择]Separating both blocks of a tackle to prepare it for reuse is called().
A. chockablocking
B. fleeting
C. overhauling
D. two blocking
[单项选择]A stopper used in securing the ground tackle for sea that consists of a grab attached to a turnbuckle is a().
A. riding pawl
B. buckler
C. devil's claw
D. locking ring
[单项选择]A small light tackle with blocks of steel or wood that is used for miscellaneous small jobs is called a().
A. snatch block
B. threefold purchase
C. handy-billy
D. chockablock
[单项选择]A block and tackle is rove to advantage. This means that the().
A. blocks have been overhauled
B. hauling parts of two tackles are attached
C. hauling part leads through the movable block
D. hauling part leads through the standing block
[单项选择]A cargo boom is a().
A. double sized mattress consists of more than 890 coils
B. spar extending from a mast or a king post
C. flap(Becker rudder)can be fitted to the rudder’s trailing edge
D. bridle arrangement having a long beam of the length of the container
[单项选择]This is()the most difficult job I have ever tackled.
A. by rights
B. by itself
C. by oneself
D. by far
[单项选择]A tackle is two blocked when the blocks are().
A. equally sharing the load
B. jammed together
C. as far apart as possible
D. rove to the highest mechanical advantage
[单项选择]Our jumbo boom can()20 tons.
A. lift
B. rise
C. elevate
D. hoist
[单项选择]The boom stops are installed on an offshore crane to().
A. prevent the boom from being raised too high
B. prevent the boom from swinging
C. support the boom when not in use
D. prevent the boom from being lowered
[单项选择]The boom indicator tells the operator at what angle the boom is compared to the().
A. horizontal position of the boom
B. vertical position of the boom
C. horizontal position of the load being lifted
D. vertical position of the load being lifted
[单项选择]A block and tackle is “rove to advantage”. This means that the().
A. blocks have been overhauled
B. hauling parts of two tackles are attached
C. hauling part leads through the movable block
D. hauling part leads through the standing block