1.6mm A.75g/㎡B.85g/㎡C.100g/㎡D.220g/㎡
1.6mm<φ≤1.8mm隔离栅钢丝Ⅰ级单面平均镀锌层附着量为()
A.75g/㎡
B.85g/㎡
C.100g/㎡
D.220g/㎡
相关考题:
隔离栅紧固件、连接件单面平均镀锌层附着量为350g/m2。()
A.75g/㎡
B.85g/㎡
C.100g/㎡
D.220g/㎡