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
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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
A.Cranes are able to pick up and drop loads over a greater spotting area
B.Increased safety because the deck is clear of running and standing rigging
C.Simplicity of operation of the crane by its operator
D.All of the above
A.It allows for rotation of the hook in the single mode
B.It is required to“twin-up”30-ton pedestal cranes
C.It is used to pick up light loads
D.It is used to rigidly connect two cranes
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最新試題
How should you signal the crane operator to lower the boom and raise the load().
What is the purpose of the equalizing beam aboard a crane vessel().
How should you signal the crane operator to move slowly().
What does “evel-luffing” accomplish during crane operations().
When using slings,cargo handlers should take all the following precautions except().
What is meant by the term“l(fā)uffing the boom”of a crane().
Most pedestal crane power is provided by().
Which statement comparing a shipboard crane to conventional gear is TRUE().
The item()is not the advantage of the hydraulic winch.
On no account()to be exceeded.