A.add strength to the bilge well strainer
B.permit rapid flow of water to the bilge wells
C.prevent cargo sifting into the bilge wells
D.prevent oil，water，or other liquid from reaching the cargo
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A.to ventilate the hold
B.to separate the cargo
C.to replace shifting boards
D.to facilitate stowage
A.require loading operations to be shut down until the atmosphere clears
B.are toxic to human life
C.are subject to spontaneous combustion
D.may be explosive in some concentrations
A.Bagged cargo
B.Bulk grain
C.Bulk rice
D.Refrigerated goods
A.device for securing a chain topping lift
B.hook to prevent the anchor cable from slipping
C.device used to drag for a submerged cable or line
D.type of clam bucket used for discharging bulk cargo
A.act as a beam to support vertical deck loads
B.lessen the longitudinal stiffness of the vessel
C.act as a tie to keep the sides of the ship in place
D.act as a web to prevent plate wrinkling due to twisting action on the vessel
最新試題
In any case the draught of the vessel at the（）shall not be less than that which is necessary to obtain full immersion of the propeller.
Strengthening damaged bulkheads by using wood or steel is called（）.
What term indicates a curvature of the decks in a longitudinal direction?（）
Reinforcing frames attached to a bulkhead on a vessel are called（）.
Transverse frames are more widely spaced on a ship that is designed with the（）.
In vessel construction，beams are transverse girders which provide support to（）.
For cargoes（）grain meals，coal，ventilation is needed to prevent them（）spontaneous combustion.
In a transversely framed ship，the transverse frames are supported by all of the following EXCEPT（）.
A venetian vent or rice ventilator is used in stowage of which cargo?（）.
What is NOT a problem when carrying coal? （）