A.dockmaster
B.dock captain
C.lockmaster
D.lock foreman
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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
A.diving operations
B.dredging
C.fishing
D.mineclearance operations
A.avoid collision
B.allow more time to assess the situation
C.be stopped in an appropriate distance
D.All of the above
最新試題
A vessel proceeding along the course of a narrow channel or fairway shall keep as near to the （）limit of the channel or fairway which lies on her（）side as is safe and practicable.
The proximity of pack ice may be indicated by（）.
A vessel proceeding along a narrow channel shall（）.
A vessel showing a rigid replica of the International Code flag A is engaged in（）.
A vessel reduces speed without backing. The rate that her speed through the water decreases depends primarily on the（）.
Before entering an ice area，the ship should be（）.
Topside icing decreases vessel stability because it is usually off-center and（）.
If a tow sinks in shallow water，you should（）.
An alternating light（）.
When operating in an area where sea ice and icebergs are present，which statement is TRUE? （）