单项选择题

The heavier outboard strake of deck plating on a ship is called the deck（）.

A.stiffener
B.beam
C.stringer
D.doubler

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单项选择题

The disinfection of various compartments in a vessel by filling with a gaseous agent to destroy rats and all insects pests which act as germ carriers means（）.

A.displacement
B.fumigation
C.discharging
D.compensation

单项选择题

The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel’s displacement into the（）.

A.transverse free surface correction for the vessel
B.sum of the vertical moments of the vessel
C.sum of the longitudinal free surface moments of the vessel
D.longitudinal centerline of the vessel

单项选择题

The center of gravity of a freely swinging load suspended from a pedestal crane acts as if it were located at the（）.

A.counterweight
B.pedestal
C.longitudinal centerline
D.point of suspension