• 2022-07-29
    识读下面的图片,可知楼梯中梯段AT3的下部纵筋为( )。[img=729x513]18031c12d31f33a.jpg[/img]
    A: [img=64x22]18031c12e10291f.jpg[/img]
    B: [img=64x21]18031c12ea8c89f.jpg[/img]
    C: [img=56x21]18031c12f382049.jpg[/img]
    D: 无上部纵筋