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
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A.length of the boom
B.angle of the boom
C.lifting capacity of the boom
D.direction of the boom
A.to use
B.to operate
C.maneuvering
D.using
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
最新試題
On no account（）to be exceeded.
The net productivity per gang-hour can be improved through a decrease of（）.
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
When viewed from above，the best position for the guy in relation to the boom is（）.
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.
How should you signal the crane operator to hoist（）.
If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.
Official draft measurements should be（）by authorized persons，agreed by both parties involved.
Which of the following statement（s）is/are FALSE regarding a twin pedestal crane set （）.