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


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3.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

5.单项选择题In a crossing situation,the stand-on vessel should normally().

A.take action to cross ahead of the other vessel
B.take action to pass astern of the other vessel
C.maintain course and speed
D.change course and increase speed

6.单项选择题In complying with the Rules,of what must the mariner take due regard?().

A.Limited backing power of his vessel
B.Radar information about nearby vessels
C.The occupation of the other vessel,if known
D.All of the above

7.单项选择题In dense fog a vessel without operational radar may not be justified()at all but should anchor if it is safe and practicable for her to do so.

A.to be underway
B.on under way condition
C.to stop engine
D.in being under way

8.单项选择题In determining a safe speed()shall not be among those taken into account.

A.the state of visibility
B.the power of the vessel
C.the traffic density
D.the maneuverability of the vessel

9.单项选择题In determining a safe speed()shall not be among those taken into account.

A.the presence of the background light at night
B.the state of wind,sea and current
C.the number of crew on board
D.the draught in relation to the available depth of water

10.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