用列举法描述集合{x|x2-3x-4<0,x∈Z}=( )。
{0,1,2,3}
She is very dear to us. We have been prepared to do _____ it takes to save her life. [ ]
A. whichever
B. however
C. whatever
D. whoever
女,45岁,胆囊切除术后第2天,动脉血气分析报告:pH7.34,PaCO30mmHg,BE-3.4mmol/L,HCO18.6mmol/L。
如果此时观察病员的呼吸,最可能的发现是()
A.呼吸深而快
B.呼吸无变化
C.呼吸深而慢
D.呼吸浅而慢
E.呼吸浅而快