The member is said to be if the steel is positioned in the form and stressed before the concrete is cast.
A. pushed B. sheared C. pretensioned D. wrapped
题目答案:C
题目解析:2
The member is said to be if the steel is positioned in the form and stressed before the concrete is cast.
A. pushed B. sheared C. pretensioned D. wrapped
题目答案:C
题目解析:2