气管切开监护时,发现容量型呼吸机压力表指针在30cmH2O处,是由于()。
A.痰液阻塞
B.管道折叠
C.活瓣发生故障
D.气管套管漏气
E.胸廓扩张障碍
参考答案:B
— Do you know _____?
— Sorry, I don't know. You may ask the woman over there. [ ]
A. when the shop opens
B. when is the shop open
C. when does the shop open
D. when will the shop open
制备软材时,软材在搅拌器中的表现应为()
A、成团块状
B、细粉尚未粘合
C、翻滚成浪
D、细粉少且紧贴颗粒