A.1:5000,1:2000,1:1000,1:500 B.1:10000,1:5000,1:2000,1:1000 C.1:1000,1:10000,1:5000,1:2000 D.1:2000,1:1000,1:500,1:100
A.正 B.負(fù) C.相同 D.相反
A.大于 B.等于 C.小于 D.大于或等于