航海英语船舶避碰章节练习(2017.12.15)

单项选择题
The rules require that a stand-on vessel SHALL take action to avoid collision when she determines that（）.
A.risk of collision exists
B.the other vessel will cross ahead of her
C.the other vessel is not taking appropriate action
D.collision cannot be avoided by the give-way vessel's maneuver alone
单项选择题
A vessel aground at night is required to show two red lights in a vertical line as well as （）.
A.not under command lights
B.restricted in her ability to maneuver lights
C.anchor lights
D.sidelights and a sternlight
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 if risk of collision exists the following considerations shall be among（）.
A.these taken into calculation
B.those taking into account
C.that taken into account
D.those taken into account
单项选择题
A vessel shall not（）.
A.enter the traffic separation zone in an emergency
B.cross a traffic lane
C.engage in fishing in the separation zone
D.proceed in an inappropriate traffic lane
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
单项选择题
A power-driven vessel leaving a quay or wharf must sound what signal? （）
A.Three short blasts
B.A long blast
C.A prolonged blast
D.No signal is required
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
Under International Rules（）.
A.all vessels must carry an after range light
B.vessels less than 50 meters in length need not carry an after range light
C.vessels stopped dead in the water should turn off their range lights
D.vessels over 20 meters in length must carry both range lights from sunset to sunrise
单项选择题
If there is sufficient sea room，alteration of（）may be the most effective action to avoid close-quarters situation.
A.speed and course
B.speed alone
C.course alone
D.speed or course