A.by
B.with
C.on
D.in
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A.cable areas
B.dumping grounds
C.fish trap areas
D.precautionary areas
A.the period of darkness exceeds the period of light
B.there is only a partial eclipse of the light
C.the periods of light and darkness are equal
D.the period of light exceeds the period of darkness
A.After boarding the pilot
B.After the pilot leaving the ship
C.After the pilot going on board
D.After taking the pilot
A.high barometric pressure
B.jet stream
C.storm surge
D.torrential rains
A.on
B.of
C.in
D.for
最新試題
The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.
On a voyage from Capetown to London，the favorable ocean current off the coast of Africa is the （）.
The distance between any two meridians measured along a parallel of latitude and expressed in miles is the （）.
At last，the palm trees that fringe the natural harbor of Port Aloahoa come into view on the horizon lit by the setting sun.The meaning of this sentence is that （）.
A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.
Areas enclosed by a long and short dashed magenta line indicate （）.
During a period of whiteout，you should expect which of the following（）.
The meaning of ebb tide is that （）.
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.
For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.