---- What do you think of the lecture made yesterday?

---- Excellent! _______ you missed such a wonderful lecture?

A．How is it that

B．Why it was that

C．How was it that

D．When was it that

使用呼吸机常用的呼吸方式有（）

A.机械控制通气（CMV）

B.同步间歇指令通气（SIMV）

C.呼吸末正压呼吸（PEEP）

D.压力支持通气（PSV）

E.持续气道正压呼吸（CPAP）