A.an anchor light
B.sidelights and a sternlight
C.three lights in a vertical line，the highest and lowest being red，and the middle being white
D.None of the above
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A.vessels ascending the river
B.vessels descending the river
C.all vessels ascending and descending the river
D.None of the above
A.The vessel has negative GM
B.The center of gravity is on the centerline
C.The list can be corrected by reducing KM
D.The vessel has asymmetrical weight distribution
A.two all-round red lights in a vertical line
B.three all-round red lights in a vertical line
C.two all-round yellow lights in a vertical line
D.three all-round green lights in a vertical line
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
A.a forward masthead light
B.sidelights and a sternlight
C.a towing light
D.All of the above
最新試題
A vessel engaged in fishing during the day would show（）.
In complying with the Rules，of what must the mariner take due regard?（）.
A vessel engaged in fishing must display a light in the direction of any gear that extends outward more than 150 meters. The color of this light is（）.
A vessel engaged in fishing shall keep out of the way of a vessel（）.
If the circumstances of the case admit，any vessel（）in a narrow channel.
If a seaplane is not used as a means of transpiration on water but is capable of being used so，it shall（）.
In dense fog a vessel without operational radar may not be justified（）at all but should anchor if it is safe and practicable for her to do so.
A vessel（）a crossing vessel，shall not normally enter a separation zone or cross a separation line.
A head-on situation at night is one in which you see（）.
A vessel constrained by her draught may，in addition to the lights prescribed for power-driven vessels in Rule 23，exhibit where they can best be seen（）or a cylinder.