A.anchor
B.to anchor
C.anchoring
D.to anchoring
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A.shows a light with varying lengths of the lighted period
B.shows a light that changes color
C.marks an alternate lesser-used channel
D.is used as a replacement for another light
A.dockmaster
B.dock captain
C.lockmaster
D.lock foreman
A.speed begins to drop
B.stops
C.receives ice damage
D.becomes icebound
A.displaying code letter Y (Yankee)
B.sounding five short blasts on his whistle
C.displaying code numeral 5
D.sounding one prolonged blast on his whistle
A.remains fully obliged
B.has no obligation
C.is not necessarily
D.is exempted
最新試題
When pushing ahead，wires leading from the quarters of the after outboard barges to the bow of a towboat（）.
The proximity of pack ice may be indicated by（）.
Any vessel shall，if the circumstances of the case admit，avoid（）in a narrow channel.
A vessel which is being assisted by an icebreaker would display a flag hoist consisting of the code numeral 4 when the vessel（）.
In selecting a tug for moving a vessel，consideration should be given to its（）.
A vessel proceeding along the bank of a river or channel has the tendency to（）.
A vessel showing a rigid replica of the International Code flag A is engaged in（）.
A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.
A vessel proceeding along a narrow channel shall（）.
If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.