单项选择题
A.30m B.40m C.50m D.60m
A.140mm³140mm³1000mm B.140mm³140mm³1100mm C.140mm³140mm³1200mm D.140mm³140mm³1300mm
A.140mm³140mm³1400mm B.140mm³140mm³1500mm C.140mm³140mm³1600mm D.140mm³140mm³1700mm