下列哪项不属于牵引治疗的适应证()
A.椎间盘突出
B.关节挛缩
C.脊柱小关节紊乱
D.四肢关节骨折不能手术复位
E.骨质疏松
参考答案:E
As long as we persist in spreading scientific knowledge among the masses, all the strange beliefs are
__________ to go out of our life. [ ]
A. necessary
B. important
C. difficult
D. bound
下列哪项不是支架变形的原因()
A.支架蜡型变形
B.打磨引起变形
C.包埋料热膨胀不足
D.合金线收缩率过大
E.包埋材料透气性差