单项选择题
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
单项选择题 What is the purpose of tricing pendants?（）
单项选择题 What is the minimum number of deck officers，able seaman or certificated persons required for a lifeboat on a vessel in ocean service?（）
单项选择题 What is the accepted standard for wire rope falls used in connection with the lifeboat gear?（）
