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
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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
A.Stopping the boom
B.Topping or lowering the boom
C.Moving the boom left or right
D.All of the above
最新試題
Sudden starts or stops of the boom is likely to cause all of the following except（）.
Which of the following statements is FALSE concerning cranes being installed on the centerline of vessels（）.
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
Where is the most probable location of the remote shutdown station for cargo pumps on a tank barge carrying oil（）.
Most pedestal crane power is provided by（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
The item（）is not the advantage of the hydraulic winch．
What is meant by the term“l(fā)uffing the boom”of a crane（）．
When using slings，cargo handlers should take all the following precautions except（）.
They（）loading at 1400 hours．