35岁，宾馆女服务员，半年前弯腰提物时突然腰痛，并向左侧臀部扩散，当时检查腰椎凸向左

抛物线y=x²在点（-1，1）处的切线方程为______．

—I feel a bit hungry now.

—Why not _______ for dinner with us?[ ]

A. go

B. did you go

C. to go

D. do you go

My most famous relative of all, __________ who really left his mark on America, was Rob Sussel, my great-grandfather.

One  B. the one  C. he  D. someone

女性，38岁，患慢性支气管炎、阻塞性肺气肿、肺源性心脏病，神志清楚，发绀明显，动脉血气分析提示代偿性呼吸性酸中毒，给予鼻导管吸氧4L／min，发绀略有减轻，但迅速进入嗜睡状态

此时首先应采取的措施是（）

A.将鼻导管吸氧流量提高到5L／min

B.5％碳酸氢钠100ml静脉滴注

C.20％甘露醇250ml快速静脉滴注

D.将鼻导管吸氧流量减少到2L／min

E.即行气管插管，呼吸机辅助呼吸

气缸目数越多，发火间隔角越大。