單項(xiàng)選擇題

The official number of a documented vessel is（）.

A.not required to be anywhere on the vessel
B.required to be permanently marked on the vessel's structure
C.required to be painted on the vessel;s stern
D.required to be painted on the vessel's bow

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單項(xiàng)選擇題

The original equilibrium position is stable when（）.

A.metacentric height is positive
B.metacentric radius is positive
C.KG exceeds maximum allowable limits
D.free surfaces are excessive

單項(xiàng)選擇題

The remote control for a fixed fire extinguishing system should be（）.

A.painted red and labeled
B.concealed from the crew
C.protected by plexiglass
D.padlocked