A.concealed
B.buried
C.existed
D.built
您可能感興趣的試卷
你可能感興趣的試題
A.one nautical mile
B.two kilometers
C.5 cables only
D.one fathom
A.a vessel arrives at a port in a evening
B.a vessel leaves a port in a evening
C.a vessel arrives at a port in a morning
D.a vessel leaves a port in a morning
A.by
B.with
C.on
D.in
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
最新試題
On a voyage from Capetown to London，the favorable ocean current off the coast of Africa is the （）.
Clearance gauges at bridges indicate （）.
Attention is called to the fact that in many cases pipelines are not （） and charted depths may be decreased by up to 2 meters．
During a period of whiteout，you should expect which of the following（）.
Attention is called to the fact that in many cases charted depths may be decreased by up to （）.
The distance between any two meridians measured along a parallel of latitude and expressed in miles is the （）.
Information on the operating times and characteristics of foreign radiobeacons can be found in which publication? （）
The Earth has the shape of a(n) （）.
A vessel not to impede the passage of another vessel is not relieved （） taking collision-avoiding action.
An occulting light is one in which （）.