【简答题】混凝土浇筑成型后,养护条件对混凝土的影响有( )。A. 养护温度越高,则混凝土强度发展越快 B. 温度降至冰点以下时,混凝土的强度停止发展 C. 湿度不够,使混凝土结构疏松,渗水性增大 D. 湿度不够,会影响水泥水化作用的正常进行,甚至停止水化 E. 养护湿度不会影响混凝土的耐久性
【多选题】混凝土浇筑成型后,养护条件对混凝土的影响有( )。
D.
湿度不够,会影响水泥水化作用的正常进行,甚至停止水化
【单选题】How to practise "Less is More" in our life according to unit 6?
A.
We should control our desire of buying too many unnecessary things.
B.
Throw unnecessary and useless things from time to time to keep room clean and tidy.
C.
To focus our mind on our goals, instead of being distracted by too many choices.
【简答题】In our college four students enjoy a bedroom . A B C D
【简答题】判断字符串 a 和 b 是否相等,应当使用 ____________ 。