A.two all-round red lights in a vertical line
B.two yellow towing lights in a vertical line
C.two white masthead lights in a vertical line
D.two lights on the stern，one yellow and one white
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A.Three short blasts
B.A long blast
C.A prolonged blast
D.No signal is required
A.alternating red and yellow light
B.alternating white and yellow light
C.all-round white or yellow light
D.all-round white light only
A.The fishing vessel must keep clear of the vessel not under command
B.If the vessel not under command is a power-driven vessel，she must keep clear of the fishing vessel
C.They must exchange whistle signals
D.Both vessels are required to take action to stay clear of each other
A.An emergency boat and crew
B.A siren or rotating flashing light
C.Flashing red lights located one-half mile upstream and downstream of the facility
D.Buoys with flashing lights controlled from shore，located one-half mile upstream anddownstream of the facility
A.a single white light forward
B.two masthead lights in a vertical line
C.two towing lights in a vertical line
D.two all-round red lights where they can best be seen
最新試題
There are two classes of vessels which，to the extent necessary to carry out their work，do not have to comply with the rule regarding traffic separation schemes. One of these is a vessel（）.
The outer limit of the Traffic Separation Schemes is（）adjustment as necessary to complywith the port regulations.
A vessel constrained by her draft may display（）.
A vessel using a traffic separation scheme shall（）.
A signal of intent must be sounded in international waters by（）.
A towing light is（）.
In a traffic separation scheme，when joining a traffic lane from the side，a vessel shall do so（）.
A vessel not using a traffic separation scheme shall avoid it by as wide a（）as is practicable.
A sailing vessel is overtaking a power-driven vessel in a narrow channel，so as to pass on the power-driven vessel’s port side. The overtaken vessel will have to move to facilitate passage. The sailing vessel is the（）.
A vessel restricted in her ability to maneuver when engaged in an operation for the maintenance of safety of navigation in a traffic separation scheme is（）complying with this rule to the extent necessary to carry out the operation.