单项选择题
The displacement of a ship is to the total weight, all told, of the relevant loaded ship（）
A.larger
B.equal
C.smaller
D.equivalent
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When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship（）
A.equal
B.larger
C.smaller
D.equivalent -
单项选择题
Propulsion engines and the vast majority of auxiliary generator engines are designed to allow a generous through-flow of scavenge air in order to control （）
A.the lubricating oil consumption
B.the turbine blade temperature
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The ship emergency plan item should not include （） Ⅰ.ifesaving,fire fighting, leakage blocking, abandon ship Ⅱ.irst aid Ⅲ.ntegration emergency
A.Ⅱ
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C.Ⅰ+Ⅲ
D.Ⅰ
