骨膜"葱皮"样改变多见于
A．骨肉瘤B．尤文肉瘤C．骨软骨瘤D．脂肪肉瘤E．骨髓瘤
参考答案：B
预应力混凝土先张法中放张的方法可用放张( )来实现。
A．横梁
B．柱
C．锚具
D．预应力筋
This room is not for so many people to live in. [ ]
A. big enough
B. enough big
C. big too
D. also big
