A.施工設(shè)備、熱鍍鋅角鋼、熱鍍鋅扁鐵、降阻劑 B.施工設(shè)備、熱鍍鋅角鐵、熱鍍鋅扁鐵、降阻劑 C.施工設(shè)備、熱鍍鋅角鋼、熱鍍鋅扁鐵、防腐劑 D.施工設(shè)備、熱鍍鋅角鐵、熱鍍鋅扁鐵、防腐劑
A.3mm B.2.5mm C.3.5mm D.1.5mm
A.1米 B.1.5米 C.2米 D.2.5米