有移位的股骨转子间骨折牵引重量为（）
A.2～4kg
B.4～6kg
C.6～8kg
D.8～10kg
E.10～12kg
参考答案：C
Xie Lei, a student studying abroad, highly recommends that you a substitute family to be with.
A．had
B．have
C．has
D．should to have
有抗震要求的柱子钢筋绑扎，箍筋弯钩应弯成( )。
A．180°
B．135°
C．120°
D．60°
