单项选择题

Limber is a term associated with ______．
A.Emergency gear
B.Drainage
C.Deck cargo storage
D.Securing gear

A.A.Emergency
B.Drainage
C.Deck
C.Securing
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单项选择题
On a vessel，the keel is the primary strength member of the lower hull form in which direction ________．A.TransverseB.DiagonalC.LongitudinalD.Vertical
A.A.Transverse
B.Diagonal
C.Longitudinal
D.Vertical
单项选择题
A.B.C.D.
A.
B.
C.
D.
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