单项选择题
On a gnomonic chart，a great circle track between Los Angeles and Brisbane will appear as a （）.
A.loxodromic curve
B.curved line concave to the equator
C.straight line
D.spiral approaching the poles as a limit
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相关考题
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单项选择题
Mariners proceeding across the main routes are recommended to do so at（）.
A.as wide an angle as practicable
B.as wide an angle so practicable
C.like wide an angle as practicable
D.like wide as angle so practicable -
单项选择题
Mariners proceeding across the main routes are（）to do so at as wide an angle as practicable.
A.recommended
B.reported
C.applied
D.complied -
单项选择题
Mariners are reminded that they should proceed in the general direction indicated by the arrows or，if（）a lane，they should do so as nearly as practicable at right angles to it.
A.cross
B.crossing
C.crossed
D.crosses
