哪项因素对硬膜外麻醉平面调节最重要
A．注药方式
B．注药速度
C．病人体位
D．药物浓度
E．药物种类
参考答案：A
The traffic problem we are looking forward to seeing ____ should have attracted the local
government's attention. [ ]
A. solving
B. solved
C. to solve
D. solve
齿条式千斤顶的起重能力较小，油压千斤顶的起重量可达（）t。
A．50
B．500
C．5 000
D．5
