單項選擇題
A.應(yīng)靠近主節(jié)點,偏離主節(jié)點的距離不應(yīng)大于600mm B.應(yīng)靠近主節(jié)點,偏離主節(jié)點的距離不應(yīng)大于300mm C.應(yīng)靠近主節(jié)點,偏離主節(jié)點的距離不應(yīng)小于400mm D.應(yīng)靠近主節(jié)點,偏離主節(jié)點的距離不應(yīng)小于600mm
A.12mm B.12.5mm C.13mm D.15mm
A.10cm B.20cm C.30cm D.40cm
A.5cm B.8cm C.10cm D.不超過10cm
A.1.5倍 B.2倍 C.3倍 D.4倍
A.24m B.30m C.20m D.15m
A.50mm B.100mm C.150mm D.200mm
A.2 B.5 C.10 D.15
A.2m B.2.5m C.3m D.3.5m
A.0.8m B.1.0m C.1.2m D.1.5m
A.0.5m B.1.0m C.1.5m D.2.0m