A.one black ball
B.two cones with bases together
C.a cone，apex downward
D.two cones，apexes together
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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
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
最新試題
A vessel crossing a river on the Western Rivers has the right of way over（）.
If a vessel of special construction cannot fully comply with the Rules，her degree of compliance shall be determined by（）.
A proper look-out shall be maintained（）.
In a crossing situation，a stand-on vessel which is forced to take action in order to avoid collision with a vessel on her own port side shall，if possible，avoid（）.
The Rules state that vessels may depart from the Rules when（）.
A proper look-out must be kept（）.
A vessel engaged in fishing shall keep out of the way of a vessel（）.
A vessel being towed astern shall show at night（）.
If a seaplane is not used as a means of transpiration on water but is capable of being used so，it shall（）.
A vessel conducting mine clearing operations will show（）.