20分钟内输血速度超过1.5ml/(k·min)就是大量输血。()
参考答案：对
假设某证券在10元处获得支撑，反弹至20元遇到阻力，根据百分比线的原理，我们可以判断，股价下跌途中可能会在（）价位获得支撑。
A.17.50
B.16.67
C.15.00
D.13.75
The selfless village doctor treated whoever came to his family without any ____. [ ]
A. charge
B. money
C. cost
D. price
