单项选择题

Any alteration of course and／or speed to avoid collision shall，if the circumstances of the case admit，（）to another vessel observing visually or by radar.

A.be large enough to be readily apparent
B.be a succession of small alterations
C.be with due regard to the power and speed of the vessel
D.leave sufficient room for the other vessel to take action

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单项选择题

All of the following constitute special circumstances EXCEPT（）.

A.Three vessels meeting so as to cross each other's course
B.A vessel meeting a vessel that is backing out of a slip
C.An overtaking situation that has reached in extremis
D.A vessel fishing with nets meeting a sailing vessel

单项选择题

All of the following are practices of good seamanship EXCEPT（）.

A.When meeting，altering course to the left to increase sea room
B.Maintaining an alert radar watch in reduced visibility
C.Showing a flare-up light to attract attention when you are not under command
D.Maintaining a proper lookout from sunrise to sunset

单项选择题

A vessel restricted in her ability to maneuver is one which（）.

A.through some exceptional circumstance is unable to maneuver as required by the Rules
B.from the nature of her work is unable to maneuver as required by the Rules
C.due to adverse weather conditions is unable to maneuver as required by the Rules
D.has lost steering and is unable to maneuver