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What basic laws of nature does plumbing follow?
 
Conductivity, Acceleration, and Motion
 
Gravity, Pressure, and Water Seeking Its own Level
 
Motion, Elasticity, and Resilience
 
 
 
What basic laws of nature does plumbing follow?
 
Conductivity, Acceleration, and Motion
 
Gravity, Pressure, and Water Seeking Its own Level
 
Motion, Elasticity, and Resilience
 
 
 
What seals the trap that prevents sewer gases from entering the household drains?
 
Water pressure
 
Air admitted by vent stacks and vent pipes
 
The aerator
 
 
 
In a modern efficient drainage system , is a sink trap really necessary?
 
 
Only when pipes of three inches or less are used.
 
It is essential.
 
It is necessary only when there is no sink filter.
 
 
 
When used in the context of plumbing, what does DWV stand for?
 
 
Drain-waste-vent
 
Darn-water-valve
 
Damp-waste-ventilation
 
 
 
When used in the context of plumbing, what does DWV stand for?
 
 
Drain-waste-vent
 
Darn-water-valve
 
Damp-waste-ventilation
 
 
 
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