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单选题
A pilot vessel on pilotage duty shall show identity lights （）.
A
at any time while underway
B
while at anchor
C
while alongside a vessel
D
All of the above
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单选题A pilot vessel may continue to sound an identity signal if she is （）.A
underway，but not making wayB
agroundC
being towedD
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单选题A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of（）.A
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单选题Which statement is TRUE concerning a towing vessel which，due to the nature of her work，is unable to keep out of the way of another vessel?（）A
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By day，she shall carry two black balls in a vertical lineC
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By day，she would show the same shapes as a vessel restricted in her ability to maneuver
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All of the above
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单选题In a crossing situation，a vessel fishing must keep out of the way of a vessel which is（）.A
under sailB
towingC
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单选题A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show （）.A
three masthead lights in a vertical line instead of either the forward or after masthead lightB
two masthead lights in a vertical line instead of either the forward or after masthead lightsC
two towing lights in a vertical line at the sternD
a small white light aft of the funnel
考题
单选题A vessel，which does not normally engage in towing operations，is towing a vessel in distress.She（）.A
need not show the lights for a vessel engaged in towing，if it is impractical to do soB
may show the lights for a vessel not under commandC
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单选题The Rules state that a seaplane shall（）.A
not be regarded as a vesselB
in general，keep well clear of all vesselsC
proceed at a slower speed than surrounding vesselsD
when making way，show the lights for a vessel not under command
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单选题A vessel towing where the tow prevents her from changing course shall carry（）.A
only the lights for a vessel towingB
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考题
单选题An anchored vessel on pilotage duty must show which light(s) at night? （）A
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单选题A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.A
when at anchorB
only when making wayC
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单选题A vessel engaged in fishing，and at anchor，shall show（）.A
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单选题A vessel enagaged in fishing，and at anchor，shall show（）.A
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three lights in a vertical line，the highest and lowest being red，and the middle being whiteD
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考题
单选题A power-driven vessel，when towing astern，shall show（）.A
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考题
单选题Which vessel when anchored at night，would not be required to show anchor lights? （）A
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考题
单选题A pilot vessel on pilotage duty at night will show sidelights and a stern light （）.A
when at anchorB
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考题
单选题An inconspicuous，partly submerged vessel or object being towed，where the length of tow is 100 meters，shall show（）.A
yellow lights at each endB
two red lights in a vertical lineC
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yellow lights at each endB
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the lights required for a power-driven vessel underwayB
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sidelights and a sternlight
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单选题Which vessel，when anchored at night，is NOT required to show anchor lights?（）.A
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