问题
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According to the regulation of the voyage trial on new ship, ____ is one of the trial item
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The emergency bilge suction or bilge injection valve is used to prevent _____ of the ship.
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The emergency bilge suction or bilge _____ is used to prevent flooding of the ship.A.injec
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According to the author, when does culture begin to emerge?A.When people decide what and h
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According to the passage, which of the following is NOT TRUE?A.Both ships were expensive o
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Which of the following represents the emergency signal for fire aboard ship?A.More than si