腓骨头、颈骨折易引起
A．血管损伤B．神经损伤C．骨的缺血性坏死D．骨筋膜室综合征
参考答案：B
As she lives quite near our school , she often goes to work on an electric bike ___ in her car .
A．other than
B．rather than
C．more than
D．less than
X线球管焦点大小常以1.0、0.6等值标注，其值称为
A．主焦点
B．副焦点
C．实际焦点
D．灯丝长度
E．有效焦点标称值
