单项选择题
No navigational aids are shown and the chart is not kept corrected for alterations in depths inside the pecked lines. For more detailed information，the larger scale charts must be （）.
A.referred to
B.appreciated
C.met with
D.concerned
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相关考题
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单项选择题
Owing to old data of the survey the positions and number of the beacons shown on this chart are not to be （）.
A.considered
B.insured
C.relied upon
D.suspected -
单项选择题
Positions read from this chart should be moved 0.08 minutes Southward and 0.13 minutes Eastward so as （） adjoining chart 344.
A.to agree upon
B.in accordance with
C.to be same as
D.to agree with -
单项选择题
Positions read from this chart should，to agree with chart 3949，be （） 0.03 minutes Northwards and 0.22 minutes Westwards．
A.shifted
B.removed
C.changed
D.altered
