单项选择题

The strength of a deck will be increased by adding（）.

A.camber
B.deck beam brackets
C.hatch beams
D.sheer

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单项选择题

The result of two forces acting in opposite directions and along parallel lines，is an example of what type of stress?（）

A.Tensile
B.Compression
C.Shear
D.Strain

单项选择题

The purpose of sheer in ship construction is to（）.

A.allow the ship to ride waves with drier decks
B.eliminate the need for butt straps
C.eliminate the need for margin plates
D.give greater strength at the deck edge