单选题Frapping lines are fitted to lifeboat davits to（）.Areduce the swinging of the lifeboat as it is being lowered from the embarkation levelBsecure the lifeboat in the davits when in the stowed positionChold the lifeboat to the ship's side until the tricing lines are passedDbe used as a safety line in an emergency
单选题
Frapping lines are fitted to lifeboat davits to（）.
A
reduce the swinging of the lifeboat as it is being lowered from the embarkation level
B
secure the lifeboat in the davits when in the stowed position
C
hold the lifeboat to the ship's side until the tricing lines are passed
D
be used as a safety line in an emergency
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