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（）.
A tug’s horsepower available at the shaft is（）.
Small floes of rough，hummocky sea ice capable of damaging a vessel（）.
The proximity of pack ice may be indicated by（）.
A vessel which is being assisted by an icebreaker should indicate that she is ready to cast off the towline by（）.
A vessel shall slacken her speed，stop，or reverse her engines，if necessary，to（）.
On a twin-screw，twin-rudder vessel，the most effective way to turn in your own water，with no way on，is to put（）.
A vessel the passage of which is not to be impeded（）to comply with this Rule when the two vessels are approaching one another so as to involve risk of collision.
A vessel is proceeding downstream in a narrow channel on the Western Rivers when another vessel is sighted moving upstream. Which vessel has the right of way? （）
If the situation arose where it became necessary to tow a disabled vessel，which statement is TRUE concerning the towing line?（）.