breathed air&unbreathed air點解?
回答 (2)
2009-09-15 12:39 am
✔ 最佳答案
breathed air is air suitable for us to live in & unbreathed air is polluted , toxic fumes such CO , H2S.... etc exceeding the safety limit that make us sick , unhealthy , or carcinogenic to live in . 2009-09-18 10:32:04 補充：
因為你用英文問 . 簡單可呼吸空氣 , 不含超過法律規定有害氣体 , 縣浮粒子 , 可安全吸用 . 不可呼吸空氣則反之 .
2009-09-16 4:31 am
Breathed air are the air that we breathed, there will be a larger amount of cabon dioxide.And the amount of oxygen will decrease.
undreathed air are the air that we haven't breath, the air around us. It contain a smaller amount of carbon dioxide than breathed air, the amount of oxygen stay normal.
undreathed air are the air that we haven't breath, the air around us. It contain a smaller amount of carbon dioxide than breathed air, the amount of oxygen stay normal.
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