为何忌在漏洞口乱抛砖石等块状材料?
参考答案:
以免架空,使漏洞继续发展扩大。
高聚物改性沥青防水卷材采用满铺法施工,短边搭接宽度为______mm。
A.80
B.70
C.60
D.50
Especially in adverse weather,risk of collision with an offshore supply vessel increase when the vessel is moored to what side of the unit?().
A.Upwind
B.Downwind
C.Crosswind
D.Downcurrent