预制柱的最后固定在基础杯内填细石砼，应分两次进行，一次灌至楔块底，第二次砼浇筑时其砼强度应至少达到()。

A.水泥砂浆

B.水泥浆

C.普通混凝土

D.细豆石混凝土

A.240mm*240mm*240mm

B.360mm*360mm*360mm

C.120mm*120mm*120mm

D.100mm*100mm*100mm

A.240mm*240mm*240mm

B.360mm*360mm*360mm

C.120mm*120mm*120mm

D.100mm*100mm*100mm

A.A 240mm*240mm*240mm

B.B 360mm*360mm*360mm

C.C 120mm*120mm*120mm

D.D 100mm*100mm*100mm

A.柔性约束;

B.光滑接触面约束;

C.铰支座约束;

D.固定端支座约束。

A.柔性约束

B.光滑接触面约束

C.铰支座约束

D.固定端支座约束

A.轻骨料混凝土

B.高强混凝土

C.干硬性细石混凝土

D.素混凝土