留置气管导管期间的并发症

A.导管梗阻

B.导管脱出

C.机械性肺损伤

D.导管误入一侧总支气管

E.气管粘膜缺血和纤毛损伤

If the steersman of your lifeboat gives the command Way enough，you should（）.

A.complete the stroke，hold your oar out from the boat and level with the water

B.dip the blade of your oar into the water and leave it there

C.lift your oar to a vertical position

D.complete the stroke，raise your oar slightly，swing it forward，and place it in the boat