【单选题】关于土钉墙施工的说法,错误的是()
A.
土钉的长度宜为开挖深度的0.5-1.2倍,间距宜为1-2m,与水平面夹角宜为50-20。
B.
土钉钢筋宜采用二级、三级钢筋,钢筋直径宜为16-32mm,钻孔直径宜为70-120mm。
C.
注浆材料宜采用水泥浆或水泥砂浆,其强度等级不宜低于M10。
【判断题】负反馈调节的主要作用是保持机能活动的相对稳定性。
【单选题】()是搜索引擎给网站(包括网页)赋予一定的权威值,是对网站(含网页)权威的评
【多选题】Who was his two best friends in the war?
【判断题】网站权重 是指搜索引擎给 网站 (包括网页)赋予一定的权威值,对 网站 (含网页)权威的评估评价。一个 网站权重 越高,在搜索引擎所占的份量越大,在搜索引擎排名就越好
【简答题】There was a gardener who looked after his garden with great care. To water his flowers, he used two buckers. One was a shiny and new bucket. The other was a very old and dilapidated one, which had see...
【单选题】土钉的长度宜为开挖深度的( )倍,间距宜为 ( ) ,与水平面夹角宜为 ( )
A.
0.5~1.2 ; 0.2~0.5m ; 15°~20 °
B.
0.5~1.2 ; 1~2m ; 5°~20 °
C.
0.5~1.2 ; 0.2~0.5m ; 5°~20 °
D.
0.5~1.2 ; 1~2m ; 15°~20 °
【单选题】( )是搜索引擎给网站(包括网页)赋予-一定的权威值,是对网站(含网页)权威的评价。
【简答题】Hi, everyone. I'm Yao Ming. I left China for the firt time in 1997 to go to Nick's camp in Pairs. That's where I met my firtst NBA star, Tim Hardaway, who was one of the camp counselors. He looked lik...