【单选题】必须生命至上、安全第一的思想,完善( ),坚决遏制重特大安全事故。
【判断题】后张法施工预应力混凝土构件时,当预应力筋采用单根粗钢筋时,配套的锚具宜采用 螺丝端杆锚具
【简答题】在预应力混凝土构件制作的后张法张拉施工中,对预应力筋张拉时,构件混凝土强度应符合设计要求;当设计无要求时,其强度应保证( )。
【单选题】在预应力混凝土构件制作的后张法张拉的施工中,对预应力筋张拉时,构件混凝土强度应符合设计要求;当设计无要求时,其强度应保证()。
【单选题】Where does David's uncle live?
A.
David's uncle lives in Zhengzhou.
B.
David's uncle lives in Beijing.
C.
David's uncle lives in Qingdao.
D.
David's uncle lives in Hainan Island.
【简答题】查询食品标准常用的网站是_____________.
【简答题】情景交际。 David: Where would you live if you could choose? Jane: It's very difficult to say. 1 David: What would you do if you lived in Paris? Jane: 2 David: You'd soon get tired of it. 3 Jane: I wouldn't...
【简答题】在预应力混凝土构件制作的后张法张拉的施工中,对预应力筋张拉时,构件混凝土强度应符合设计要求;当设计无要求时,其强度应保证( )。