單項選擇題

It is dangerous for vessels without the use of radar（）the estuary.

A.to get
B.to approach
C.to proceed
D.to close

你可能感興趣的試題

單項選擇題

Induced magnetism is found in（）.

A.hard iron
B.soft iron
C.vertical iron only
D.horizontal iron only

單項選擇題

If several fixed navigational lights are visible at the same time，each one may be positively identified by checking all of the following EXCEPT what against the Light List?（）

A.Rhythm
B.Period
C.Intensity
D.Color

<del id="kvho2"></del>

<del id="kvho2"></del>

<th id="kvho2"><progress id="kvho2"></progress></th>