单项选择题
A.0.5m~1.5m,30mmB.0.5m~1.5m,50mmC.25mm~0.5m,30mmD.25mm~0.5m,50mm
A.1.2mB.1mC.900mmD.500mm
A.1.2m,180mmB.1m,160mmC.1.2m,160mmD.1m,180mm