A.3MHz B.8MHz C.12MHz D.25MHz
A.1/100 B.1/50 C.1/10 D.1/5
A.57.5 B.44.4 C.37.8 D.31.3
A.1.5m B.2.5m C.3.5m D.4.5m
A.500门 B.1000门 C.3000门 D.5000门
