The depth of nasogastrie is about
A. 30-35cm
B. 40-45cm
C. 55-60cm
D. 60-65cm
E. 65-70cm
The complications of nasogastrie intubation not include
A. epistaxis
B. aspiration
C. esophageal perforation
D. pylorochesis
E. esophageal erosion
Which is the contraindication of nasogastric intubation
A. a recent history of ingestion of caustic subatances
B. stupefaction
C. trachea cannula
D. upper gastrointestinal bleeding
E. intestinal obstruction
应用文的主旨是中心思想或基本观点,是文章的魂。应用文主旨的要求是( )和( )
A. 明确
B. 正确
C. 新颖
D. 直接
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