單項選擇題Damage to cargo caused by dust is known as（）.

A.contamination
B.oxidation
C.tainting
D.vaporization


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1.單項選擇題Damage to cargo caused by fumes or vapor from liquids,gases, or solids is known as（）.

A.contamination
B.oxidation
C.tainting
D.vaporization

2.單項選擇題Damaged bulkheads often take a permanent set which is independent of the panting or bulge caused by water pressure. To control this, you should（）.

A.install shoring so the the shoring supports the damaged bulkhead without pushing on them
B.install shoring so that it pushes on the damaged bulkhead while supporting it
C.use jacks or chain falls to remove the set before installing shores
D.place sandbags by the bulkhead without installing shores

3.單項選擇題Deadweight, which is the cargo carrying capacity of a vessel in tons, is determined by（）.

A.loaded displacement minus light displacement
B.gross tonnage minus net tonnage
C.loaded displacement minus net tonnage
D.light displacement minus the weight of the vessel

4.單項選擇題During cargo operations, your vessel develops a list due to the center of gravity rising above the transverse metacenter. To correct the list, you should（）.

A.shift weight to the high side
B.shift weight to the centerline
C.add weight in the lower holds or double bottoms
D.remove weight from the lower holds or double bottoms

5.單項選擇題During counterflooding to correct a severe list aggravated by an off-center load, your vessel suddenly takes a list or trim to the opposite side. You should（）.

A.continue counterflooding in the same direction
B.continue counterflooding, but in the opposite direction
C.immediately stop counterflooding
D.deballast from the low side