單項選擇題To agree with larger scale chart，latitudes taken from this chart should be increased （） about 8 seconds．

A.with
B.in
C.by
D.to


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1.單項選擇題The soundings on the imperial chart are measured in（）.

A.Feet
B.Yards
C.Fathoms
D.Meters

2.單項選擇題The broken magenta lines（long and short dashes）in and around Mobjack Bay indicate（）.

A.Amphibious training areas
B.Grounds for dredge spoil
C.Fish trap areas
D.Gunnery exercise areas

3.單項選擇題That the scale of any part of a chart to be larger than the scale of the survey is（）.

A.very rare
B.common
C.often
D.reasonable

4.單項選擇題When navigating in high latitudes and using a chart based on a Lambert conformal projection，（）.

A.a straight line drawn on the chart approximates a great circle
B.the chart should not be used outside of the standard parallels
C.the course angle is measured at the mid-longitude of the track line
D.distance cannot be measured directly from the chart

6.單項選擇題Where would you obtain data on currents for areas of the world not covered by the National Ocean Service（）.

A.In the Coast Pilot
B.In the Nautical Almanac
C.In the List of Lights
D.In the Sailing Directions

7.單項選擇題The shoreline on charts generally represents the mean（）.

A.High water line
B.Low water line
C.Low water spring line
D.Tide level

8.單項選擇題The short-long dashed magenta line around Gardiners Island marks（）.

A.A regulated anchorage
B.Fish trap areas
C.An area closed to the public
D.Underwater cables

9.單項選擇題The maximum difference between mean time and apparent time is （）.

A.equal to the longitude expressed in time units
B.about 16 minutes
C.the difference between the GHA of mean sun and the first point of Aries
D.15°of arc

10.單項選擇題The survey information upon which a chart is based is found （）.

A.at the top center of the next line
B.near the chart title
C.at the lower left corner
D.at any convenient location