CT示颈前三角区囊性占位,可见钙化,瘤壁有轻度强化,颈动脉受压与颈静脉分离,最有可能的诊断为()
A.动脉体瘤
B.腮裂囊肿
C.神经鞘瘤
D.颈淋巴结核
E.颌下腺混合瘤
参考答案:C
---I was trying to carry out the plan, but I failed.
---Well, you _________, for we were uncertain it would do ________.
A.needn’t do that, in fact
B.needn’t have done, in effect
C.needn’t have, in practice
D.needn’t, in time
当地下水位从基础底面处上升到地表面,对附加应力有何影响?
A.附加应力增加
B.附加应力减少
C.附加应力不变