What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.<br>A:Jacob's ladder<br>B:Manropes<br>C:Heaving lines<br>D:All of the above

What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.
A:Jacob's ladder
B:Manropes
C:Heaving lines
D:All of the above

出自：海船船员证

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