A.0.3-0.5米,0.5~0.8米B.0.5-0.8米,0.8~1.0米C.1.0-1.2米,1.2~1.4米D.1.4-1.5米,1.5~1.8米
A.?32,?20,?12B.?12,?20,?32C.?12,?32,?20D.?20,?12,?32
A.80mmB.90mmC.100mmD.110mm