单项选择题
A.a safety line attached to a man working over the side B.used to measure water depth C.used to slow the headway of a barge D.used to measure the overhead height of a bridge
A “bowline” is used to（）.A.join lines of equal sizeB.fo...
单项选择题A “bowline” is used to（）.
A.join lines of equal size B.form a temporary eye (loop) at the end of a line C.be a stopper D.keep a line from fraying
“safe speed” is defined as that speed where（）.A.you can...
单项选择题“safe speed” is defined as that speed where（）.
A.you can stop within your visibility range B.you can take proper and effective action to avoid collision C.you are traveling slower than surrounding vessels D.no wake comes from your vessel
Deep-sea liners are（）.A.ferriesB.passenger linersC.crui...
单项选择题Deep-sea liners are（）.
A.ferries B.passenger liners C.cruise ships D.ocean going vessels
