單項(xiàng)選擇題A vessel reduces speed without backing. The rate that her speed through the water decreases depends primarily on the（）.

A.vessel's horsepower
B.sea state
C.number of propellers
D.vessel's displacement


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1.單項(xiàng)選擇題A vessel proceeding along the course of a narrow channel shall keep as near to the outer limitof the channel which lies on her starboard side as it is safe and practicable.Which one of the followings does the statement express?（）.

A.A vessel shall proceed near the other vessel on her starboard side on the narrow channel since it is safe and practicable
B.A vessel shall avoid proceeding near the starboard outer limit of a narrow channel as long as it is safe and practicable
C.A vessel shall avoid proceeding along the channel because it is not safe and practicable
D.A vessel shall proceed near the starboard outer limit of a narrow channel to the degree in which it is safe and practicable

3.單項(xiàng)選擇題A vessel proceeding along the bank of a river or channel has the tendency to（）.

A.continue in line with the bank
B.hug the bank
C.sheer away from the bank
D.increase speed

4.單項(xiàng)選擇題A vessel proceeding along a narrow channel shall（）.

A.avoid crossing the channel at right angles
B.not overtake any vessels within the channel
C.keep as near as safe and practicable to the limit of the channel on her starboard side
D.when nearing a bend in the channel，sound a long blast of the whistle

5.單項(xiàng)選擇題A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）

A.The vessel moving upstream against the current
B.The vessel moving downstream with a following current
C.The vessel located more towards the channel centerline
D.The vessel with the least amount of maneuverability