男性,42岁,支气管哮喘急性发作,查血气分析:PaCO增高提示()
A.病情好转
B.出现呼吸性碱中毒
C.出现心力衰竭
D.病情恶化
E.无临床意义
参考答案:D
长方形的面积是375平方米,已知宽比长少10米.长方形的周长是______米.
_____ when the light went on last night?
A.What were you doing
B.What have you done
C.What did you do
D.How were you doing