• 2022-06-03
    The disadvantage of district ventilation is that there are many return air shafts and ventilation equipment.
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      The basic principle behind the total structure ventilation design is to use inside air to sweep up through a building to clear and remove the dust-laden air.

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      should be used to improve local ventilation

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      The basic principle behind the total structure ventilation design is to use inside air to sweep up through a building to clear and remove the dust-laden air. A: 正确 B: 错误

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      Dead space like ventilation refer to () A: decrease<br/>of partial alveolar ventilation B: increase<br/>of partial alveolar VA/Q C: increase<br/>of partial alveolar ventilation D: decrease<br/>of partial alveolar VA/Q E: increase<br/>of anatomic shunt

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      Which of the following is not an advantage of central parallel ventilation?( ) A: The ventilation system is basically independent and safe B: Centralized layout of industrial sites C: Convenient management D: Less coal-pillar loss