A、<span style="font-size:14px;font-family:宋体">柱距不变，加大梁截面可减小剪力滞后</span>
B、<span style="font-size:14px;font-family:宋体">结构上部，剪力滞后减小</span>
C、<span style="font-size:14px;font-family:宋体">结构正方形时，边长愈大，剪力滞后愈大</span>
D、<span style="font-size:14px;font-family:宋体">角柱愈大，剪力滞后愈小；</span><span style="font-size:14px;font-family:'Times New Roman'">d</span><span style="font-size:14px;font-family:宋体">．地基土类别</span>