"On a Mercator chart, 1 nautical mile is equal to ____.
A.1 minute of longitude
B.1 degree of longitude
C.1 minute of latitude
D.1 degree of latitude"
正确答案是C
"On a Mercator chart, 1 nautical mile is equal to ____.
A.1 minute of longitude
B.1 degree of longitude
C.1 minute of latitude
D.1 degree of latitude"
正确答案是C