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单选题
Which of the following statements describes one of the functions of the ballast system?（）
A
To permit flooding of any fuel oil storage tank on any class of ship
B
To use it as a secondary service system
C
To store reserve feed or potable water for extended cruises
D
To stabilize the ship by flooding certain designed tanks with seawater
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单选题Which of the following statements describes one of the functions of the ballast system?（）A
To permit flooding of any fuel oil storage tank on any class of shipB
To use it as a secondary service systemC
To store reserve feed or potable water for extended cruisesD
To stabilize the ship by flooding certain designed tanks with seawater
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Both are higher than normal burning temperaturesB
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