配筋砌体工程中（）的混凝土及砂浆的强度等级应符合设计要求。
A.构造柱
B.芯柱
C.组合砌体构件
D.配筋砌体剪力墙构件
参考答案：A, B, C, D
液压支架底座的结构型式有：整体式底座、（）、底靴式底座。
_____ were sent to hospital and _____ were buried.
A．The burnt; the dead
B．The injuring; the dying
C．The injured; the dead
D．The injured; the died
