A.complete and often very poor surveys
B.correct and often very good surveys
C.inadequate and often very old surveys
D.adequate and present surveys
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A.equipment's
B.tools
C.apparatus
D.aids
A.with
B.in
C.by
D.to
最新試題
On chart，bearings to near objects should be used in preference to objects farther off，because（）.
When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.
Which information is found in the chart title（）.
That the scale of any part of a chart to be larger than the scale of the survey is（）.
What information is found in the chart title? （）
The maximum difference between mean time and apparent time is （）.
What is NOT an advantage of the rhumb line track over a great circle track? （）
The path that a vessel is expected to follow，represented on a chart by a line drawn from the point of departure to the point of arrival，is the（）.
The short-long dashed，magenta lines parallel to York River Entrance Channel mark（）．
Which chart symbol indicates the bottom is clay（）.