关于小儿肺炎的护理错误的是（）。

A.体位采用头低位

B.经常翻身更换体位以减轻肺部瘀血

C.及时注意吸痰以保持呼吸道通畅

D.尽量多喂水，但不能过急过快，以防呛咳及引起窒息

E.输液时严格控制液量及速度，以防肺水肿

You have taken information on project scope and resources and then developed durations for input to schedules. Since there was very limited information about the project, you used actual duration of a previous, similar activity as the basis for estimating future activity. What will be a next step after this activity

A．Using diagramming techniques like GERT and systems dynamic

B．Calculating theoretical early and late start and finish dates for all project activitie

C．Using standardized networks to expedite preparation of project network diagram

D．Subdividing project work packages into smaller more manageable components for better management contro