A.is the SWL of the crane
B.are the SWL of the crane
C.the SWL of the crane is
D.the SWL of the crane are
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A.executed
B.located
C.fixed
D.measured
A.Electro-hydraulic units
B.Steam units
C.Independent internal combustion power units
D.All of the above
A.when the line pull reaches the rated winch capacity
B.after the line pull exceeds the rated winch capacity
C.after a short build-up of torque
D.immediately
A.Use one hand to give any motion signal，and place the other hand motionless in front of the hand giving the motion signa
B.Extend arm with the thumb pointing up，and flex the fingers in and out for as long as the load movement is desired
C.First tap your elbow with one hand and then proceed to use regular signals
D.First tap the top of your head with your fist and then proceed to use regular signals
A.Extend arm and point finger in the direction to move the boom
B.Extend arm with thumb pointing downward and flex fingers in and out
C.With forearm vertical and forefinger pointing up，move hand in small horizontal circles
D.With arm extended downwards and forefinger pointing down，move hand in small horizontal circles
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Official draft measurements should be（）by authorized persons，agreed by both parties involved.
Which part of a conventional cargo gear rig provides for vertical control and positioning of a boom（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
Which operation may cause the pressure in an inert tank to fall below the prescribed limits（）.
The item（）is not the advantage of the hydraulic winch．
What does “evel-luffing” accomplish during crane operations（）.
Most pedestal crane power is provided by（）.
When instructing a crew member concerning the right way to lift a weight，you would instruct him to（）.
Which statement is TRUE concerning the placard entitled Discharge of Oil Prohibited（）.
When discharging oil from an oil tanker the instantaneous rate（）60 liters per nautical mile.