問答題
單項(xiàng)選擇題
A.0 B.±2mm C.±5mm D.±10mm
A.10±2mm B.50±5mm C.100±10mm D.150±10mm
A.3s B.4s C.5s D.10s
A.0s B.4s C.5s D.10s
A.20±5m B.20±10m C.20±15m D.0m
A.5km/h B.10km/h C.15km/h D.30km/h