Vertical structural members attached to the floors that add strength to the floors are called（）.<br>A:boss plates<br>B:buckler plates<br>C:stiffeners<br>D:breast hooks

Vertical structural members attached to the floors that add strength to the floors are called（）.
A:boss plates
B:buckler plates
C:stiffeners
D:breast hooks

出自：海船船员证

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