问题
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The load limitation of governor should be reduced when ship navigating at sea, the main reason is to .
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When navigating using GPS,what is an indicator of the geometry of the satellites that your
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The urgency signal concerning the illness of persons on board ship is ().A.MAYDAYB.PANC.SE
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Which of the following is true when navigation with radar during restricted visibility ().
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The navigation computers have one thing in common
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Without signals from navigation satellites the in