在车站站台处,正馈线最大弛度时距地面的高度不得小于()
A.5m
B.6m
C.7m
D.7.5m
参考答案:C
患儿男性,14岁。脊柱向左向后弯曲,渐加重半年以特发性脊柱侧弯入院,在全麻加硬膜外麻醉下行脊柱矫形术,术中唤醒试验成功,手术顺利,术毕安返病房。
手术体位宜用()。
A.俯卧位
B.仰卧位
C.直立位
D.头低斜坡位
E.坐立位
His sister had to wait for him for another two hours, _______ she? [ ]
A. wasn't
B. doesn't
C. hadn't
D. didn't