半刚性材料
参考答案:
由水泥,石灰,粉煤灰等无机结合料结合而成的水硬性或碎石(砾石)的材料。
In assessing the impact of the loss of a parent through death and divorce it was the distortion of family relationships not the ______ of the bond with the parent in divorce that was vital.
A.disposition
B.distinction
C.distribution
D.disruption
肾盂输尿管连接处梗阻常用的辅助检查有( )
A.肾穿刺活检
B.静脉肾盂造影
C.尿流动力学检查
D.B超
E.消化道造影