67÷4
=67×14
=314；
答：每份是314．
故答案为：314．
对于二氧化碳中毒者不能用压胸人工呼吸法进行人工呼吸。
Fog forms when the air（）.
A.is 50% water saturated
B.is 90% water saturated
C.temperature is greater than the dew point temperature
D.temperature is equal to，or below the dew point temperature
