A.only at night
B.only during restricted visibility
C.at night and during restricted visibility
D.at all times
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A.only in fog
B.only between the hours of sunset and sunrise
C.only when entering and leaving port
D.at all times
A.one sidelight of a vessel ahead of you
B.one sidelight and a masthead light of a vessel ahead of you
C.one sidelight，a masthead light，and a range light of a vessel ahead of you
D.both sidelights of a vessel dead ahead of you
A.humidity
B.varying densities of water
C.vessel traffic
D.the jet stream
A.besides
B.excepted
C.otherwise
D.other than
A.there are other vessels in the vicinity
B.operating in a traffic separation scheme
C.engaged in a situation involving more than two vessels
D.necessary to avoid immediate danger
最新試題
If a vessel is engaged in fishing according to the definitions in the Rules，it will have （）.
If the circumstances admit，（）of small alteration of course and speed shall not be taken to avoid collision.
A vessel being pushed ahead is required to carry which of the following lights?（）.
In a crossing situation，the stand-on vessel should normally（）.
A vessel enagaged in fishing，and at anchor，shall show（）.
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 conducting mine clearing operations will show（）.
A proper look-out must be kept（）.
A vessel approaching a narrow channel shall（）.
A head-on situation at night is one in which you see（）.