A. [Ln/4–起步间距]/S(向上取整)+1 B. [Ln/4×k (或按标注长度×k +锚固长度-起步间距)]/S(向上取整)+1 C. [Ln/4×k (或按标注长度×k )]/S(向上取整)+1 D. [Ln/4×k (或按标注长度×k ) –起步间距]/S(向上取整)+1
A. 对 B. 错