A.It prevents the load from swinging when the boom level is adjusted
B.Less power is needed when topping the boom with a load on the hook
C.It maintains the height of the load above the deck
D.All of the above
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A.started
B.finished
C.completed
D.reported
A.Cranes/derricks
B.Crane/derrick cycles
C.Crane/derrick cycle time
D.Weight per package
A.Date and description of each failure
B.Average load in pounds for each usage
C.Total number of lifts for each usage
D.All of the above
A.less jerky starts
B.less jerky stops
C.overheating worries
D.none of the overheating worries
A.breaking a cargo runner
B.parting guys topping lifts
C.carrying away a block
D.overheating the resistors and eventually burning out
最新試題
How should you signal the crane operator to hoist（）.
Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.
Running an electric winch at slow speed over a long period of time causes（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
They（）loading at 1400 hours．
The Master or person in charge of a ship shall ensure the crane record book shows the（）.
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.
Damage by（）shall not be considered as handling damage.
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
When using slings，cargo handlers should take all the following precautions except（）.