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
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相关考题
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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 -
单项选择题
Strengthening damaged bulkheads by using wood or steel is called（）.
A.bracing
B.battening
C.blocking
D.shoring
