4厘米:4千米的比值是请选择ABCD/C+~9n2j8E9?-s7`/D7W+\1H9t+^2q.R/]0@+y
A.十万分之一1H9t+^2q.R/]0@+y
B.1:100000001H9t+^2q.R/]0@+y
C.11H9t+^2q.R/]0@+y
D.1/100001H9t+^2q.R/]0@+y