单项选择题
A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.
A.remains fully obliged
B.has no obligation
C.is not necessarily
D.is exempted
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相关考题
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单项选择题
A vessel showing a rigid replica of the International Code flag A is engaged in（）.
A.diving operations
B.dredging
C.fishing
D.mineclearance operations -
单项选择题
A vessel shall slacken her speed，stop，or reverse her engines，if necessary，to（）.
A.avoid collision
B.allow more time to assess the situation
C.be stopped in an appropriate distance
D.All of the above -
单项选择题
A vessel shall be deemed to be overtaking when she can see at night（）.
A.only the sternlight of the vessel
B.a sidelight and one masthead light of the vessel
C.only a sidelight of the vessel
D.any lights except the masthead lights of the vessel
