X线片所见不能作为诊断依据
A．腰椎结核B．腰椎骨折C．腰椎骨关节炎D．腰椎间盘突出症E．颈椎病
参考答案：D
There was an oil painting _______ in the corner. It _______ there for several days.
A．laying; had laid
B．lain; had laid
C．lying; had lain
D．laid; had been lain
在无限介质中进行集中药包爆破，可用于（）。
A.松动爆破
B.炸胀药壶爆破
C.下深层爆破
