问题
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Among the main propulsion units on board the ship with the same capacity, the lightest one is_____.
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Which of the following electric motors would be the safest and most reliable to use on the main deck of a vessel in foul weather conditions?
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The condition where a ship on the end of a tow line is riding a wave crest at the same tim
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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 urgency signal concerning the illness of persons on board ship is ().A.MAYDAYB.PANC.SE
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The most common forms of main drive used on deck auxiliaries are _____.A.steam plants, ele
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