单项选择题

If there is sufficient sea room，alteration of（）may be the most effective action to avoid close-quarters situation.

A.speed and course
B.speed alone
C.course alone
D.speed or course

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单项选择题

If there is any doubt as to the proper operation of a radar，which statement is TRUE?（）.

A.Only a radar expert can determine if the radar is operating
B.All radars have indicator lights and alarms to signal improper operation
C.A radar range compared to the actual range of a known object can be used to check the operation of the radar
D.The radar resolution detector must be energized to check the radar

单项选择题

If it becomes necessary for a stand-on vessel to take action to avoid collision，she shall NOT，if possible，（）

A.decrease speed
B.increase speed
C.turn to port for a vessel on her own port side
D.turn to starboard for a vessel on her own port side

单项选择题

Any vessel（）any other shall keep out of the way of the vessel（）.

A.overtaking／overtaken
B.being overtake／being overtaken
C.overtaking／being overtaken
D.being overtaking／overtaken