A.the time of day
B.the seasons
C.geography
D.All of the above
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A.sphere
B.oblate spheroid
C.spheroid of revolution
D.oblate eggoid
A.air gap
B.freeboard
C.penetration
D.water depth
A.range of tide
B.height of tide
C.charted depth
D.actual water depth
A.difference in longitude
B.mid-longitude
C.departure
D.meridian angle
A.increases in north latitude and decreases in south latitude
B.decreases as DLO increases
C.increases with increased latitude
D.decreases with increased latitude
最新試題
A pilot vessel on pilotage duty shall show identity lights （）.
On a voyage from Capetown to London，the favorable ocean current off the coast of Africa is the （）.
During daylight savings time the meridian used for determining the time is located farther （）.
A vessel not to impede the passage of another vessel is not relieved （） taking collision-avoiding action.
The Earth has the shape of a(n) （）.
The Earth’s irregular heating is caused by （）.
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 （）.
For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.
An occulting light is one in which （）.
Attention is called to the fact that in many cases charted depths may be decreased by up to （）.