下列情况下可使吸入麻醉药的MAC降低,但除外()
A.老年人
B.PaCO2升高=60mmHg
C.低温
D.低钠血症
E.服用锂剂
参考答案:B
解析:
影响MAC的因素不包括PaCO2
证明一元二次方程ax2+bx+c=0有一正根和一负根的充要条件是ac<0.
— Can I wear any clothes I like to school?
— No, you can't. You _____ wear a uniform. [ ]
A. might
B. must
C. will
D. would