A、is rigged at an angle of 70°to 90°from the guy it assists
B、takes the strain imposed on the schooner guy when burtoning cargo
C、is rigged when lifting cargo that exceeds the SWL of a single whip
D、should take the strain if the regular guy parts
更多“The preventer guy，as used on a conventional yard and stay rig，（）.”相关的问题
A、let the schooner guy take most of the strain，thus transferring the load to the opposite boom B、leave the preventer guy slack C、secure them as close together as possible on deck D、secure them so the angle between them is 90°at the boom head
A、and preventer have equal stress B、stronger than the preventer to minimize the danger of separation C、take a lighter load than the preventer as a safety factor D、take the stress in case the preventer parts
A、allow greater than normal loads to be handled by the gear B、act as an inboard guy in the event the inboard guy parts during cargo handling C、assist the outboard guy in supporting stresses during cargo handling D、prevent the inboard guy from parting due to stresses during cargo handling
A、prevents anyone from working the cargo at unauthorized times B、is a safety measure in case one of the outboard guys parts C、is a longshoreman who watches for accidents D、is the same as a blacksmith
A、Don’t shift the guy as you like. B、Don’t shift the stay as you like. C、Don’t move the derrick as you like. D、Don’t move the crane as you like.
A、A. When the derrick is stopped, the guy must be stowed. B、B. When the derrick is stopped, the guy must be topped. C、C. When the derrick is stopped, the guy must be lowered. D、D. When the guy is stopped, the derrick must be stowed.
A、act as a chain stopper B、prevent the windlass from engaging C、prevent the chain from fouling on deck D、control the wildcat
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