the lights required for a power-driven vessel underway
only the required masthead lights
a sternlight only
sidelights and a sternlight
第1题：
A single vessel being towed alongside shall exhibit ______.
A.one all-round white light
B.sidelights and a stern light
C.only the outboard sidelight and a stern light
D.a masthead light，sidelights，and a stern light
第2题：
A vessel or object being towed astern shall display a(n) ______.
A.forward masthead light
B.after masthead light
C.stern light
D.All of the above
第3题：
A pilot vessel on pilotage duty at night will show sidelights and a sternlight ______.
A.when at anchor
B.only when making way
C.at any time when underway
D.only when the identifying lights are not being shown
第4题：
By day，she shall carry a black cylinder shape
By day，she shall carry two black balls in a vertical line
By night，she would show the same lights as a vessel not under command
By day，she would show the same shapes as a vessel restricted in her ability to maneuver
第5题：
If practical, when shall a manned vessel being towed sound her fog signal?______.
A.Immediately before the towing vessel sounds hers
B.Immediately after the towing vessel sounds hers.
C.As close to the mid-cycle of the towing vessel’s signals as possible
D.At any time as long as the interval is correct
第6题：
A vessel engaged in fishing，and at anchor，shall show ______.
A.an anchor light
B.sidelights and a stern light
C.three lights in a vertical line，the highest and lowest being red，and the middle being white
D.None of the above
第7题：
A towing vessel pushing a barge ahead and rigidly connected in a composite unit shall show the lights of ______．
A.A vessel towing by pushing ahead
B.A power-driven vessel，not towing
C.A barge being pushed ahead
D.Either answer A or answer B
第8题：
A partly submerged vessel or object being towed，which is not readily noticeable，shall show ______.
A.yellow lights at each end
B.two red lights in a vertical line
C.a black ball
D.a diamond shape
第9题：
a vessel towing by pushing ahead
a power-driven vessel，not towing
a barge being pushed ahead
either answer A or answer B
第10题：
vessel not under command
sailing vessel
vessel being towed (manned)
vessel being towed (unmanned)