下面关于短期刚度的影响因素说法错误的是()
A. ρ 增加, Bs略有增加
B. 提高混凝土强度等级对于提高 Bs的作用不大
C. 截面高度对于提高Bs的作用最大
D. 截面配筋率如果满足承载力要求,基本上也可以满足变形的限值。
What possible risks may lead to revenue loss in Customs valuation?
What results may sound Customs valuation standards and practices bring?
What is the first significant result of international effort towards harmonization?