A、three balls in a vertical line
B、two balls in a vertical line
C、one ball near the foremast and one ball at each fore yard
D、one diamond near the foremast head and one ball at each fore yard
更多“A vessel conducting mine clearing operations will show（）.”相关的问题
A、conduct a fire drill B、conduct a boat drill C、log the fore and aft draft marks D、test the emergency generator
A、by the toolpusher B、in the station bill C、by the person conducting the drill D、at the previous safety meeting
A、by the toolpusher B、in the station bill C、by the person conduction the drill D、at the previous safety meeting
A、testing all alarm and detection systems B、breaking out and using the vessel's emergency equipment C、participation by selected crew members D、one person putting on protective clothing，if the vessel is so equipped
A、exchange navigational information between vessels B、exchange navigational information between a vessel and a shore station C、conduct necessary tests D、exchange operating schedules with company dispatcher
A、A.conductivity higher than a normal conductor B、B.conductivity higher than a normal insulator C、C.high conductivity at low temperatures D、D.low conductivity at high temperatures
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