A.assumed
B.appreciated
C.promised
D.permitted
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A.the time of day
B.the seasons
C.geography
D.All of the above
A.range of tide
B.height of tide
C.charted depth
D.actual water depth
A.range of the tide
B.plane of the tide
C.stand of the tide
D.reversing of the tide
A.concealed
B.buried
C.existed
D.built
A.set the vessel to the left
B.set the vessel to the right
C.offer resistance in the form of a head current
D.furnish additional thrust in the form of a fair or following current
A.one nautical mile
B.two kilometers
C.5 cables only
D.one fathom
A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal
A.List of Lights
B.Coast Pilot
C.Sailing Directions
D.List of Radiobeacons
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.more serious
B.not less serious
C.more dangerous
D.no more dangerous
最新試題
The height of eye correction is smaller than geometrical dip because of （）.
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.
Due to lapse of time the risk in these areas to surface navigation is now considered （）than the ordinary risks of navigation，but a very real risk still exists with regard to anchoring，fishing or any form of submarine or seabed activity.
A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.
The height of a light is measured from which reference plane?（）
The meaning of ebb tide is that （）.
The height of tide 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 （）.
Areas enclosed by a long and short dashed magenta line indicate （）.
In Admiralty Sailing Directions，bands is the word used to indicate（）marking．