航海英语航行值班与海上避碰章节练习(2018.01.31)

单项选择题
If the circumstances of the case admit，any vessel（）in a narrow channel.
A.shall have the liberty to anchor
B.shall avoid anchoring
C.shall moor to a buoy when necessary
D.shall keep anchoring
单项选择题
A vessel crossing a river on the Western Rivers has the right of way over（）.
A.vessels ascending the river
B.vessels descending the river
C.all vessels ascending and descending the river
D.None of the above
单项选择题
If the circumstances admit，（）of small alteration of course and speed shall not be taken to avoid collision.
A.depression
B.oppression
C.succession
D.possession
单项选择题
A vessel engaged in mine clearance operations is called（）.
A.a vessel restricted in her ability to maneuver
B.a vessel not under command
C.a vessel constrained by her draught
D.a vessel not under way
单项选择题
A vessel engaged in fishing must display a light in the direction of any gear that extends outward more than 150 meters. The color of this light is（）.
A.white
B.green
C.red
D.yellow
单项选择题
If a vessel is engaged in fishing according to the definitions in the Rules，it will have （）.
A.gear extending from the side or stern
B.gear that restricts maneuverability
C.less than 50 percent trolling lines
D.None of the above
单项选择题
You are approaching another vessel and are not sure whether danger of collision exists. You must assume（）.
A.there is a risk of collision
B.you are the give-way vessel
C.the other vessel is the give-way vessel
D.there is no risk of collision
单项选择题
Vessels，（）support vessels，should not enter the safety zone of a deepwater port unless clearance has been obtained from the Vessel Traffic Supervisor.
A.besides
B.excepted
C.otherwise
D.other than
单项选择题
A vessel conducting mine clearing operations will show（）.
A.three balls in a vertical line
B.two balls in a vertical line
C.one ball near the foremast and one ball at each fore yard
D.one diamond near the foremast head and one ball at each fore yard
单项选择题
In determining a safe speed（）shall not be among those taken into account.
A.the characteristics，efficiency and limitation of the radar equipment
B.any constraints imposed by the radar range scale in use
C.the effect on radar detection of the sea state，weather and other sources of interference
D.the safe working load of the cranes both on board and ashore