A.three black shapes in a vertical line; the highest and lowest are balls，and the middle one is a diamond
B.three shapes in a vertical line; the highest and lowest are red balls，and the middle one is a white diamond
C.three black balls in a vertical line
D.two black balls in a vertical line
您可能感興趣的試卷
你可能感興趣的試題
A.not under command
B.engaged on pilotage duty
C.restricted in her ability to maneuver
D.engaged in fishing
A.forward masthead light
B.after masthead light
C.stern light
D.All of the above
A.two red lights at night and two black balls during daylight
B.two red lights at night and three black balls during daylight
C.three red lights at night and two black balls during daylight
D.three red lights at night and three black balls during daylight
A.two all-round red lights in a vertical line
B.anchor lights and sidelights
C.two all-round white lights in a vertical line，sidelights and a stern light
D.two all-round red lights in a vertical line，sidelights，and a stern light
A.white lights are not used
B.red and green lights are not used
C.the signal cannot be mistaken for a signal authorized by the Rules
D.the vessel signals such intentions over the radiotelephone
最新試題
A vessel is “l(fā)isted” when it is（）.
A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.
A vessel is “engaged in fishing” when（）.
（）is due，in spite of that the salvage services have been rendered by or to vessel belonged to the same owner.
A vessel is considered to be “restricted in her ability to maneuver” under the Rules if she is （）.
A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.
A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE? （）
A vessel is overtaking when she can see which light(s) of a vessel ahead?（）
A vessel showing a green light over a white light in a vertical line above the level of the sidelights is（）.
A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312°. What action should be taken to remove this error during compass adjustment? （）