【单选题】关于施工缝处继续浇筑混凝土的说法,正确的是()。
A.
已浇筑的混凝土,其抗压强度不应小于1.0N/mm 2
B.
清除硬化混凝土表面水泥薄膜和松动石子以及软弱混凝土层
D.
浇筑混凝土前,宜先在施工缝铺一层1:3水泥砂浆
【单选题】关于施工缝处继续浇筑混凝土的说法,正确的是( )。
A.
已浇筑的混凝土,其抗压强度不应小于1.0N/mm2
B.
清除硬化混凝土表面水泥薄膜和松动石子以及软弱混凝土层
D.
浇筑混凝土前,宣先在施工铺一层1:3水泥砂浆
【单选题】By the fact that he stayed in the United States for more than ten years, he developed an American ________.
【单选题】关于施工缝处继续浇筑混凝土的说法,正确的是( )
A.
已浇筑的混凝土,其抗压强度不应小于1.0N/mm2;
B.
清除硬化混凝土表面水泥薄膜和松动石子以及软弱混凝土层;
D.
浇筑混凝土前,宜先在施工缝铺一层1∶1水泥砂浆。
【单选题】Each of the following is a valid conclusion from the graphs and the fact that the population of the United States was greater in 1995 than in 1991 EXCEPT
A.
In 1991, adults whose highest degree was at least a bachelor's degree were more than twice as likely to participate in adult educa-tion than those whose highest educational attainment was a high school diploma or GED (high school equivalency diploma).
B.
On a percentage basis, from 1991 to 1995, the greatest increase in the adult education par-ticipation rate was among those adults whose highest educational attainment was grades 9-12, without earning a high school diploma.
C.
In 1995, more people participated in adult edu-cation programs than in 1991.
D.
From 1991 to !995 the rate of participation in adult education among the groups represented in the graphs increased the least for those who had attained at least a bachelor's degree.
E.
In 1995, more adults with at least a bachelor's degree participated in adult education than did adults who attended some college but did not earn a college degree.
【单选题】关于施工缝处继续浇筑混凝土的说法,正确的是()。
A.
已浇筑的混凝土,其抗压强度不应小于1.0N/mm
B.
清除硬化混凝土表面水泥薄膜和松动石子以及软弱混凝土层
D.
浇筑混凝土前,宜先在施工缝铺一层1:1水泥砂浆
【单选题】关于施工缝处继续浇筑混凝土的说法,正确的是( )。
A.
已浇筑的混凝土,其抗压强度不应小于 1.0N/mm²
B.
清除硬化混凝土表面水泥薄膜和松动石子以及软弱混凝土层
【单选题】关于细石混凝士刚性防水层施工要求,下列说法正确的是 ( )。
A.
厚度不应小于40 mm, 钢筋网放置在混凝土的中上部,保护层厚度不小于10 mm
B.
厚度不应小于40 mm, 钢筋网放置在混凝土的中下部,保护层厚度不小于10 mm
C.
厚度不应小于20 rnm, 钢筋网放置在混凝土的中上部,保护层厚度不小于10 mm
D.
厚度不应小于30 mm, 钢筋网放置在混凝土的中下部,保护层厚度不小于10 mm
【单选题】The fact that United States is a country in which most people are Christians ______.