A.They are self-priming B.Decreasing the speed of rotation will decrease the discharge pressure C.Opening the discharge valve wider will increase the discharge pressure D.All of the above
A.winch speed B.boom strength C.load radius D.cable strength
A.Running rigging leading aft from the masts B.Running rigging leading forward from the masts C.Standing rigging leading aft from the masts D.Standing rigging from the cross trees to the mast head
A.Overloading B.Overstowage C.Overbooking D.Overcarriage
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
