单选题When administering artificial respiration, it is of the utmost important to （）Ause the mouth-to-mouth methodBclear airwaysCuse rhythmic pressure methodDknow all approved methods
单选题
When administering artificial respiration, it is of the utmost important to （）
A
use the mouth-to-mouth method
B
clear airways
C
use rhythmic pressure method
D
know all approved methods
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名词解释题厌氧呼吸（anaerobic respiration）