A.Cleaning system
B.Drainage system
C.Strengthening system
D.Weight reduction system
您可能感興趣的試卷
你可能感興趣的試題
A.to easily remove the kinks that form in the lines
B.to allow the seamen on the stage to know the direction and strength of the current
C.to provide the seaman something to hold onto if he or she falls from the stage into the water
D.only for short periods of time since they will become waterlogged and be very heavy to pull up
A.Oil-lubricated bearings
B.Lignum vitae
C.Hard rubber
D.Bronze bushings
A.Tube fitted to an ullage hole
B.Area the product is loaded into
C.Void or empty space separating two tanks
D.Opening in the deck used for cleaning a tank
A.Absorption
B.Osmosis
C.Evaporation
D.Oxidation
A.Press board
B.Steel hatch boards
C.Steel plates
D.Wooden hatch boards
最新試題
What is used to prevent twisting of a towing bridle?（）
For existing ships，（）is not an improvement to safety.
What type of stern tube bearing has the least friction（）.
Which space cannot be deducted from gross tonnage when calculating net tonnage（）.
The hull is divided up into a number of watertight compartments by（）.
Tonnage openings must be closed by means of（）.
When lowering manropes alongside a stage rigged over the side of a vessel，they should be allowed to trail in the water（）.
The Vessel’s cargo holds are properly fitted with（）in way of hatches.
Which of the following tensioning devices is used with webbing to secure light vehicles aboard Ro-Ro vessels（）.
Floors aboard ship are（）.