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
单项选择题 The Admiralty Notices to Mariners can be obtained （） by Masters of vessels from anyAdmiralty Chart Agent．
单项选择题 The chart you supplied was anything （） up to date．
单项选择题 To （） Admiralty Charts 438，latitudes taken from this chart should be increased by about 5 seconds．
