单项选择题
A.5300KGB.2650KGC.2650ND.10600KG
A.60~400g/m2B.60~450g/m2C.70~450g/m2D.65~450g/m2
A.90daN/mm2maxB.80daN/mm2maxC.100daN/mm2maxD.70daN/mm2max