问题
单项选择题
Lighter longitudinal stiffening frames on the vessel side pating are called（）.
A.stringers
B.side frames
C.side stiffeners
D.intercostals
答案
参考答案：A
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Lighter longitudinal stiffening frames on the vessel side pating are called（）.
A.stringers
B.side frames
C.side stiffeners
D.intercostals
参考答案：A