当列车运行速度不超过120km/h时,工作支的坡度安全值不超过()。
A.3‰
B.4‰
C.5‰
D.8‰
参考答案:C
– Would you like to join us in the game?
–_____, for I have something important to attend to.
A.I will
B.I’d love to
C.I won’t
D.I’m afraid not
抢救小脑幕裂孔疝首先应采用哪种措施()。
A.快速静脉点滴高渗性脱水剂
B.颅内钻孔脑室外引流
C.脑室-腹腔分流
D.去骨瓣减压
E.开颅病变切除