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
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Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
Regulations concerning the stowage，lashing，and securing of timber deck cargoes aboard general cargo vessels may be found in the（）.
When viewed from above，the best position for the guy in relation to the boom is（）.
Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.