A.enforces
B.cancels
C.corrects
D.replenishes
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A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal
A.publications
B.notices to mariners
C.supplements
D.Annual Summary of Admiralty Notices to Mariners
A.specified by international authorities
B.specified by national authorities
C.on standard map
D.on the chart or Sailing Directions in use
A.assumed
B.appreciated
C.promised
D.permitted
最新試題
The Earth has the shape of a(n) （）.
During a period of whiteout，you should expect which of the following（）.
Conditions for crossing a rough bar are usually best at （）.
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 （）.
The distance between the surface of the water and the tidal datum is the （）.
The period at high or low tide during which there is no change in the height of the water is called the （）.
As these features are not all charted，special caution should be exercised （） vessels navigating in the vicinity.
A vessel not to impede the passage of another vessel is not relieved （） taking collision-avoiding action.
For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.