What is TRUE concerning frapping lines?（）<br>A:They are used to steady a lifeboat when lowered<br>B:They are normally attached to the davit span<br>C:They are needed only on radial davits<br>D:They are used to clear the puddings

What is TRUE concerning frapping lines?（）
A:They are used to steady a lifeboat when lowered
B:They are normally attached to the davit span
C:They are needed only on radial davits
D:They are used to clear the puddings

出自：海船船员证

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