A.do not interfere with the keeping of a proper look-out
B.are not the color of either sidelight
C.have a lesser range than the prescribed lights
D.All of the above
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A.a red light over a white light
B.a white light over a red light
C.a green light over a white light
D.two red lights in a vertical line
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
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
最新試題
A proper look-out shall be maintained（）.
A vessel being towed will show（）.
A vessel crossing a river on the Western Rivers has the right of way over（）.
Vessels，（）support vessels，should not enter the safety zone of a deepwater port unless clearance has been obtained from the Vessel Traffic Supervisor.
A vessel aground at night is required to show two red lights in a vertical line as well as （）.
A proper look-out must be kept（）.
A vessel engaged in fishing during the day would show（）.
If a vessel is engaged in fishing according to the definitions in the Rules，it will have （）.
If a vessel of special construction cannot fully comply with the Rules，her degree of compliance shall be determined by（）.
A vessel conducting mine clearing operations will show（）.