体外循环复温时血温与水温温差应（）
A.15℃
B.20℃
C.<15℃
D.<10℃
E.<20℃
参考答案：D
The twins look the same. Mr Li find ______ hard to tell one from the other.
A it B them C her D that
糖皮质激素对下列哪些因素引起的脑水肿有效
A.脑肿瘤
B.脑缺血
C.脑脓肿
D.颅内出血
E.脑外伤
