对跌倒或汽车碰撞后出现颈痛的患者,初步的颈部影像检查应是()
A.骨扫描
B.MRI
C.CT扫描
D.X线平片
E.脊髓造影
参考答案:D
After Tom had finished some paper work, he ______ interviewing the applicants.
A.starts
B.had started
C.started
D.has started
钎探检查验槽法中,打锤时,举高离钎顶为50~70cm,将钢钎垂直打入土中,并记录()。
A.每打入土层20cm的锤击数
B.每打入土层30cm的锤击数
C.每打入土层40cm的锤击数
D.每打入土层50cm的锤击数