单项选择题
A.exist B.exists C.existing D.to be existed
In determining safe speed，all of the following must be ...
单项选择题In determining safe speed，all of the following must be taken into account EXCEPT the（）.
A.maximum horsepower of your vessel B.presence of background lights at night C.draft of your vessel D.maneuverability of your vessel
When a vessel sees the other ahead or nearly ahead，by n...
单项选择题When a vessel sees the other ahead or nearly ahead，by night she could see the masthead lights of the other in a line or nearly in a line or both side lights，（）shall be deemed to exist.
A.head-on situation B.end-situation C.crossing situation D.close-quaters situation
When in sight of another vessel，any action taken to avo...
单项选择题When in sight of another vessel，any action taken to avoid collision must（）.
A.be accompanied by sound signals B.not result in another close quarters situation C.include a speed change D.All of the above
