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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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
A.provide safe electrical power connection to barge equipment
B.keep the vessel from surging excessively
C.prevent an accidental discharge of static electricity
D.secure the cargo hose to a hatch when loading overall
最新試題
The item（）is not the advantage of the hydraulic winch．
Which statement comparing a shipboard crane to conventional gear is TRUE（）.
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels（）.
On no account（）to be exceeded.
What does “evel-luffing” accomplish during crane operations（）.
Pedestal cranes have limit switches to restrict movement of which function（s）（）.
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
Running an electric winch at slow speed over a long period of time causes（）.
How should you signal the crane operator to lower the boom and raise the load（）.
The net productivity per gang-hour can be improved through a decrease of（）.