What does the term Positive pressure means? – McqOptions

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1.	What does the term Positive pressure means?
A.	The contaminants of the room should not flow out into the surrounding
B.	There should be the balance between the room and surrounding of air and contaminants
C.	The pressure makes room isolated from the surrounding and contaminants
D.	The air pressure is lower than the surrounding
Answer» D. The air pressure is lower than the surrounding

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