题目内容

沉井的构造应满足沉井施工和使用阶段的要求，以下哪种论述是错误的

A. 按照施工的要求，井壁厚度可以上、下不一致
B. 设置隔墙的目的是为了加强沉井的刚度
C. 刃脚内侧斜面与水平面的夹角必须小于45°
D. 隔墙底面应高出刃脚底面，以避免下沉困难

查看答案

搜索结果不匹配？点我反馈

更多问题

0.09 mol·L-1酒石酸溶液的pH（pKa1=3.04，pKa2=4.37）为2.04。

A. 对
B. 错

0.20mol·L-1NaCO3的pH（H2CO3的pKa1=6.38，pKa2=10.25）为11.77。（）

A. 对
B. 错

Which of the following is not a Transitional Phrase?

A. for example
B. in case
C. on this occasion
D. as an illustration

If life is about survival of a species — and intelligence is meant to serve that survival — then we can’t compare with pea-brained sea turtles, ______ were here long before us and survived the disaster that wiped out the dinosaurs.

A. which
B. that
C. what
D. this