A.The loading dock
B.The midpoint of the barge
C.Within 25 feet of the pump engine
D.Above the forward rake end
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A.At a 45° angle
B.At right angles
C.4 feet aft of the heel of the boom
D.Parallel to the boom
A.Ensure that slings are securely fastened around the load
B.Avoid careless winch operations，especially when handling fragile cargo
C.Exercise care when using hooks，crowbars，and similar tools
D.Keep the loads as close to the rail or deck as possible
A.Arch the back to add strength to the muscles
B.Bend his knees and lift with his legs
C.Bend his back and stoop
D.Bend his back and stoop with arms straight
A.Should not exceed
B.Must be up to
C.Should exceed
D.Should be about
A.get the bow up
B.discharge from the wings first
C.discharge from the centerline tanks first
D.discharge from amidships first
最新試題
When discharging an oil cargo，the first consideration is to（）.
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
Sudden starts or stops of the boom is likely to cause all of the following except（）.
Which part provides for transverse control and positioning of a boom in a conventional yard and stay system（）.
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（）.
How should you signal the crane operator to move slowly（）.
How should you signal the crane operator to lower the boom and raise the load（）.
What is meant by the term“l(fā)uffing the boom”of a crane（）．
Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
The net productivity per gang-hour can be improved through a decrease of（）.