單項選擇題When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.

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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1.單項選擇題When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.

A.Should not exceed
B.Must be up to
C.Should exceed
D.Should be about

2.單項選擇題When discharging an oil cargo，the first consideration is to（）.

A.get the bow up
B.discharge from the wings first
C.discharge from the centerline tanks first
D.discharge from amidships first

3.單項選擇題What is/are the advantage（s）of cranes over conventional cargo booms（）.

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

4.單項選擇題What is the purpose of the equalizing beam aboard a crane vessel（）.

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

5.單項選擇題What is meant by the term“l(fā)uffing the boom”of a crane（）．

A.Stopping the boom
B.Topping or lowering the boom
C.Moving the boom left or right
D.All of the above