问题 单项选择题

某二级建筑土质边坡高为8m,侧向土压力合力水平分力标准值为200kN/m,挡墙侧压力分布情况是:自0~2m为三角形分布,2~8m为矩形分布,在2m、4.5m、7.0m处分别设置三层锚杆,第二层锚杆的间距为2.0m,采用永久性锚杆挡墙支护,锚杆钢筋抗拉强度设计值为fy=300N/mm2锚杆倾角为25°,锚杆钢筋与砂浆间连接强度设计值为fb=2.1MPa,锚固体与土体间黏结强度特征值为35kPa,按《建筑边坡工程技术规范》计算,(对第二层锚杆)。

如取锚杆轴向拉力设计值Na=200kN,钢筋截面面积As宜为( )。

A. 966mm2
B. 1063mm2
C. 1086mm2
D. 1100mm2

答案

参考答案:A

阅读理解
任务型阅读。阅读下面短文,按要求完成短文后的各项任务。
     Once the colors of the world argued. All thought that they were the best and most important.
     Green said:"Clearly I am the most important. I am the sign of (1)______ and hope. I'm the color of grass,
trees and leaves. Without me, all animals would die."
     Yellow laughed:"You are all so serious. I bring (2)______ and warmth into the world. Every time people
look at a yellow sunflower, they start to smile (微笑). Without me there would be no fun."
     Orange shouted:"I am the color of (3)______ and strength. I have the most important vitamins (维生素).
Think of carrots, vegetables and oranges. When I appear in the sky, (4) everyone is shocked at my beauty
and nobody gives another thought to any of you."

     (5) Red couldn't stand it any longer,"I am the color of (6)_____ and bravery. I am willing to fight for a
cause. I bring fire (火) into the blood."
     Their voices became louder and louder. The thunder got angry and the rain started to pour. When they
became calm the rain said, "(7) You foolish colors. Don't you know that each of you is unique (独一无二)?
If you don't agree, just follow me." They did as the rain told them and together made the most beautiful
rainbow (彩虹).
任务一:用下列方框中所给词的适当形式完成文中(1)(2)(3)(6)四空,使其语意正确,逻
              辑合理。(每词限用一次,每空限填一词)
dangerous,     healthy,     happy,     life
任务二:将(4)处划线句子翻译成汉语。 
              ______________________________________________________________________________
任务三:将(5)处划线句子进行同义句转化。
              5. Red could stand it.
              ______________________________________________________________________________
任务四:将(7)处划线句子变成感叹句。 
              7. you colors are!
              ______________________________________________________________________________
任务五:8. Which of the following is the best title of the passage?
                  A. All the colors are foolish.
                  B. Getting united (团结) is important.
                  C. Every color is unique.
                  D. All the colors are excellent.
单项选择题