单选题The preventer guy，as used on a conventional yard and stay rig，（）.Ais rigged at an angle of 70°to 90°from the guy it assistsBtakes the strain imposed on the schooner guy when burtoning cargoCis rigged when lifting cargo that exceeds the SWL of a single whipDshould take the strain if the regular guy parts
单选题
The preventer guy，as used on a conventional yard and stay rig，（）.
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
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