單項選擇題She(the vessel)shall if necessary()and in any event navigate with extreme caution until danger of collision is over.

A.take all her way off
B.take her way all off
C.take her way off
D.take off her all way


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1.單項選擇題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

2.單項選擇題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

3.單項選擇題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

5.單項選擇題Five or more short blasts on a vessel’s whistle indicates that she is().

A.In doubt that another vessel is taking sufficient action to avoid a collision
B.Altering course to starboard
C.Altering course to port
D.The stand-on vessel and will maintain course and speed

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