單項選擇題In the Oil Record Book, a comprehensive list of operational items are grouped into operational sectionsEach section is codified by a/an （）.
A.number
B.abbreviation
C.letter
D.All of the above
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1.單項選擇題The difference between the starboard and port drafts caused by a transverse shift in weight is （）.
A.list
B.heel
C.trim
D.flotation
2.單項選擇題To prevent the spread of fire by conduction, you should （）.
A.cool the bulkheads around the fire
B.remove combustibles from direct exposure
C.close all openings to the area
D.shut off all electric power
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For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
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