下列面层混凝土板中,属于目前我国较多采用的是( )。 下列面层混凝土板中,属于目前我国较多采用的是( )。A.普通(素)混凝土板 B.碾压混凝土板 C.预应力混凝土板 D.钢筋混凝土板 分类:基础知识 题型:简答题 查看答案
They l;vill not start the project until the board chairman__ They l;vill not start the project until the board chairman___________back from S 分类:基础知识 题型:简答题 查看答案
当栏杆在基坑四周固定时,可采用钢管打人地面( )cm深,钢管离基坑边口的距离不应小于50 cm。 当栏杆在基坑四周固定时,可采用钢管打人地面( )cm深,钢管离基坑边口的距离不应小于50 cm。A.20~50 B.30~50 C.20~80 D.30~80 分类:基础知识 题型:简答题 查看答案
A)She visited her middle schoo1.C)She was busy workin9.B)She A)She visited her middle schoo1.C)She was busy workin9.B)She was ill and had to 分类:基础知识 题型:简答题 查看答案