当采用锤击沉桩时,当桩之间的距离小于4倍桩的直径时,不可采用()的打桩顺序。
A.逐排打设
B.从中间向两侧打设
C.分段打设
D.从四周向中间打设
参考答案:D
I felt surprised that anyone of his intelligence such an easy test.
A.might have failed
B.could have failed
C.should have failed
D.must have failed
排架机构单层工业厂房设置连系梁的主要目的是()
A.承担吊车荷载
B.增加厂房的纵向刚度
C.承担屋面荷载
D.承担上部墙体荷载
E.抵抗风荷载