A.0.2MΩ B.0.3MΩ C.0.4MΩ D.0.5MΩ
A.1、6 B.1.5、7 C.1、7 D.2、6
A.25 B.26 C.27 D.28
A.0.3~0.5m B.0.5~1.0m C.0.7~1.0m D.1.0~1.5m
A.1~1.2km B.1~1.5km C.1~2km D.1~2.5km