單項選擇題
A.20mm B.30mm C.40mm D.50mm
A.2m B.2.5m C.3m D.4m
A.2 m B.2.5 m C.3 m D.3.5 m
A.2m B.2.5m C.3m D.3.5m
A.200mm B.300mm C.400mm D.600mm
A.100mm B.200mm C.500mm D.750mm
A.100mm B.200mm C.500mm D.800mm
A.100mm B.200mm C.250mm D.300mm
A.1.5 m B.2 m C.2.5 m D.6 m