A.经纬线 B.指向标 C.上北下南,左西右东 D.海拔
A.1∶100,000 B.1∶300,000 C.1∶1,000,000 D.1∶3,000,000
A.1:1000 B.1/3000000 C.1:25000000 D.图上1厘米代表实地距离5千米