A. 抵抗风荷载 B. 传递竖向荷载 C. 加强厂房结构的空间整体刚度和稳定性 D. 传递竖向荷载和水平荷载
A. REVOKE UPDAE(XH)ON TABLE FROM U4 B. REVOKE UPDAE(XH)ON TABLE STUD FROM PUBLIC C. REVOKE UPDAE(XH)ON TABLE STUD FROM U4 D. REVOKE ALL PRIVILEGES ON TABLE FROM U4