电缆穿管保护时,管内径不应小于电缆外径的( )。
A.1倍
B.1.5倍
C.2倍
D.2.5倍
参考答案:B
---She’s never been to Hainan, ________?
---________. She went there last week for the first time.
A.has she; Yes, she has
B.has she; No, she hasn’t
C.hasn’t she; Yes, she has
D.hasn’t she; No, she hasn’t
女性患者,67岁,右手抖动、行走缓慢已4年,经过神经科检查后考虑为帕金森病。
经药物治疗症状一度好转后又出现加重。为进一步治疗加用安坦、金刚烷胺、溴隐亭和苯海拉明,但近来症状突然波动交替出现加重和缓解两种状态,伴有异动症。此现象为哪种药物的副作用()
A.安坦
B.金刚烷胺
C.左旋多巴
D.溴隐亭
E.苯海拉明