In ship construction，keel scantlings should be the greatest（）.<br>A:at each frame<br>B:amidships<br>C:one-third the distance from the bow<br>D:one-third the distance from the stern

In ship construction，keel scantlings should be the greatest（）.
A:at each frame
B:amidships
C:one-third the distance from the bow
D:one-third the distance from the stern

出自：海船船员证

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