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37. Lifting accessories shall be proof-tested prior to use to ____ percent of their rated load.
38. Crane capacity charts used by cranes on barges are provided by ____.
39. In demolition work, ball weights should be limited to not more than what percent of capacity at the maximum radius?
40. In the event of heat damage, torch burns, or electric arc strikes, wire rope should be ____.
41. Which of the following does not need to be marked on a sling?
42. According to ASME B30.5 rotation resistant rope must be replaced when there are how many broken wires in 30 rope diameters?
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