单项选择题
A.1m B.2m C.3m D.4m
A.5-10 B.10-15 C.15-20 D.20-25
A.10-20m B.20-30m C.30-40m D.40-50m
A.20cm B.30cm C.40am D.50cm
A.360ram B.370ram C.380ram D.390ram
A.0.5-0.7 B.0.6—0.8 C.0.7-0.9 D.0.8-0.9
A.0.5-0.7m B.0.6-0.8m C.0.7-0.9m D.0.8-1m
A.10mm B.15mm C.25mm D.35mm
A.20mm B.30mm C.40mm D.50mm
A.用2m靠尺和楔形塞尺检查 B.尺量和楔形塞尺检查 C.尺量检查 D.拉5m线和尺量检查
A.尺量和楔形塞尺检查 B.用2m靠尺和楔形塞尺检查 C.尺量检查 D.拉5m线和尺量检查