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Plumbing
ASSE 5110 Backflow Prevention Tester
Cross-Connection Control Fundamentals
Knowledge Check
Cross-Connection Control Fundamentals
Knowledge Check
Knowledge Check
1 / 9
Which of the following causes backsiphonage?
A
A boiler creating excess pressure
B
A water main break creating negative pressure in the supply
C
Thermal expansion in a closed system
D
A pump boosting downstream pressure
Check Answer
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