A.to use
B.to operate
C.maneuvering
D.using
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A.is the S.W.L. of the crane
B.are the S.W.L. of the crane
C.the S.W.L. of the crane is
D.the S.W.L.of the crane are
A.boom angle
B.boom strength
C.load radius
D.cable strength
A.dock riser
B.ship's cargo tanks
C.shore tank discharge
D.All of the above
A.unchanged
B.increased
C.eliminated
D.decreased
A.increases as the cargo closes the head while hoisting
B.increases if the cargo runner is doubled up
C.decreases as the boom is topped to a greater angle
D.is determined by the thrust stresses on the boom
最新試題
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
When using slings，cargo handlers should take all the following precautions except（）.
Which of the following statement（s）is/are TRUE regarding a twin pedestal crane set（）.
Official draft measurements should be（）by authorized persons，agreed by both parties involved.
Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
What is the purpose of the equalizing beam aboard a crane vessel（）.
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels（）.
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.