单项选择题

SAFE SPEED is defined as that speed where（）.

A.you can stop within your visibility range
B.you can take proper and effective action to avoid collision
C.you are traveling slower than surrounding vessels
D.no wake comes from your vessel

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单项选择题

In order for a stand-on vessel to take action in a situation，she must determine that the other vessel（）.

A.Is restricted in her ability to maneuver
B.Has sounded the danger signal
C.Is not taking appropriate action
D.Has not changed course since risk of collision was determined

单项选择题

If your vessel is the stand-on vessel in a crossing situation（）.

A.You must keep your course and speed
B.You may change course and speed as the other vessel must keep clear
C.The other vessel must keep her course and speed
D.Both vessels must keep their course and speed