The grab rail of a metal lifeboat is normally located（）.<br>A:along the turn of the bilge<br>B:along each side of the keel<br>C:near the top of the gunwale<br>D:at the bow and at the stern

The grab rail of a metal lifeboat is normally located（）.
A:along the turn of the bilge
B:along each side of the keel
C:near the top of the gunwale
D:at the bow and at the stern

出自：海船船员证

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