A.only in fog
B.only between the hours of sunset and sunrise
C.only when entering and leaving port
D.at all times
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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
A.The rules require vessels to comply with Traffic Separation Scheme regulations
B.The rules use the term safe speed
C.The Rules permit a stand-on vessel to take action prior to being in extremis
D.All of the above are correct
最新試題
If a seaplane is not used as a means of transpiration on water but is capable of being used so，it shall（）.
A vessel approaching a narrow channel shall（）.
A vessel being towed astern shall show at night（）.
If the circumstances of the case admit，any vessel（）in a narrow channel.
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.
A vessel（）when underway shall so far as possible，keep out of the way of a vessel not under command.
A vessel engaged in trawling will show identification lights of（）.
If a vessel of special construction cannot fully comply with the Rules，her degree of compliance shall be determined by（）.
A vessel aground at night is required to show two red lights in a vertical line as well as （）.