A.Hoist upper & lower limits
B.Luff travel limits
C.Rider block hoist upper & lower limits
D.All of the above
您可能感興趣的試卷
你可能感興趣的試題
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
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
最新試題
Most pedestal crane power is provided by（）.
What is the purpose of the equalizing beam aboard a crane vessel（）.
What is/are the advantage（s）of cranes over conventional cargo booms（）.
The net productivity per gang-hour can be improved through a decrease of（）.
Which statement is FALSE concerning a tagline as used with a 30-ton pedestal crane（）.
They（）loading at 1400 hours．
Which method should be used to warm up the pump turbines prior to discharge（）.
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（）.
The item（）is not the advantage of the hydraulic winch．
Which statement comparing a shipboard crane to conventional gear is TRUE（）.