折线型构件和框架结构上的孔道预留方法宜用()
A.钢管抽芯法
B.胶管抽芯法
C.预埋管法
D.A和B
参考答案:C
男性,50岁,左耳慢性化脓性中耳炎20多年,近2个月出现左耳流血性分泌物,耳痛,检查见外耳道深部淡红色新生物,质脆,触之易出血,颈部未触及包块。确诊的手段为()
A.电测听+声导抗
B.颅底及颞骨X线片
C.颞骨MRI
D.颞骨CT
E.活检
I cried () my voice, but still they could not hear me.
A. at top of
B. at the top of
C. on the top in
D. to the top of