哮喘重度发作时的血气变化为
A. pH↑,PaO2↓
B. PaO2↓,PaCO2↑
C. pH↑,PaO2↓
D. pH↑,PaCO2↓
E. pH↓,BE↓
She was so stubborn that she wouldn’t change her opinions.
A. unwilling
B. talented
C. obstinate
D. determined
Losing the job was bad, but even worse was the feeling that I had ____ my dear wife and children.
A. let alone
B. let down
C. let off
D. let up
2岁患儿,发热、咳嗽2d,惊厥昏迷1d。查体:体温39℃,鼻翼扇动,双肺细湿啰音,心率136/min,腹软,肝右肋下1.5cm。可除外以下哪项诊断
A. 支气管肺炎
B. 中毒性脑病
C. 毒血症
D. 脑水肿
E. 心力衰竭