A.a vessel restricted in her ability to maneuver
B.a vessel not under command
C.a vessel constrained by her draught
D.a vessel not under way
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A.under sail
B.restricted in her ability to maneuver
C.crossing a channel
D.All of the above
A.white
B.green
C.red
D.yellow
A.one black ball
B.two cones with bases together
C.a cone，apex downward
D.two cones，apexes together
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
最新試題
One of the factors which affects the circulation of ocean currents is（）.
A vessel（）when underway shall so far as possible，keep out of the way of a vessel not under command.
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.
A vessel engaged in trawling will show identification lights of（）.
Which statement about the Navigation Rules is TRUE?（）.
A vessel approaching a narrow channel 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.
Vessels，（）support vessels，should not enter the safety zone of a deepwater port unless clearance has been obtained from the Vessel Traffic Supervisor.
If the circumstances of the case admit，any vessel（）in a narrow channel.
If a vessel of special construction cannot fully comply with the Rules，her degree of compliance shall be determined by（）.