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____ are the wheels on a crane with open grooves that ropes or cables f…

Question

____ are the wheels on a crane with open grooves that ropes or cables fit around. guardrails supporting surfaces load - moment indicators sheaves

Explanation:

Brief Explanations

Sheaves are wheels on a crane with open grooves for ropes or cables. Guardrails are safety barriers. Supporting surfaces are for bearing weight. Load - moment indicators show load - moment.

Answer:

Sheaves