Why are building components generally more vapor permeable than air permeable?
What will be an ideal response?
Air and vapor exert their own independent pressures on enclosure surfaces. The vapor pressure difference between
the inside and outside is generally much higher than the corresponding air pressure difference. Consequently, it is much easier for vapor to permeate through the enclosure than air.
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A. ?Flux metal arc welding B. ?Flux tungsten arc welding C. ?Gas tungsten arc welding D. ?Plastic core arc welding
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Indicate whether the statement is true or false
Field crop production requires the expert knowledge of horticulturists
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A vehicle's oil pressure warning light is on. Technician A says that the pressure sending unit should be replaced and the vehicle re- checked. Technician B says that a mechanical oil pressure gauge should be used to check the oil pressure before replacing the sending unit. Which technician is correct?
A) Technician A only
B) Technician B only
C) Both technicians A and B
D) Neither technician A nor B