A、<span style="font-family: 宋体;font-size: 16px">次梁</span></p><p></p>
B、<span style="font-family: 宋体;font-size: 16px">连梁</span></p><p></p>
C、<span style="font-family: 宋体;font-size: 16px">圈梁</span></p><p></p>
D、<span style="font-family: 宋体;font-size: 16px">过梁</span></p><p></p>