A.before
B.when
C.after
D.during
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A.maximum counter weight required
B.minimum horsepower required
C.hoist rope strength
D.allowable load
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
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How should you signal the crane operator to move slowly（）.
On no account（）to be exceeded.
What is the purpose of the equalizing beam aboard a crane vessel（）.
Damage by（）shall not be considered as handling damage.
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
The net productivity per gang-hour can be improved through a decrease of（）.
When viewed from above，the best position for the guy in relation to the boom is（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.
Which method should be used to warm up the pump turbines prior to discharge（）.