A.maximum counter weight required
B.minimum horsepower required
C.hoist rope strength
D.allowable load
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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
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
最新試題
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
Damage by（）shall not be considered as handling damage.
Official draft measurements should be（）by authorized persons，agreed by both parties involved.
When viewed from above，the best position for the guy in relation to the boom is（）.
On no account（）to be exceeded.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
When using slings，cargo handlers should take all the following precautions except（）.
How should you signal the crane operator to move slowly（）.