由起航点30°10'N,120°08'E至到达点10°30'N,145°05'E的纬差与经差为()。
A:44°40'N,024°57'E
B:19°40'S,024°57'E
C:19°40'N,024°57'W
D:40°40'S,024°57'W
出自:海船船员证