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TEXAS WASTEWATER CLASS A 200 QUESTIONS WITH ANSWERS UPDATE
Question :Seeding of BOD samples is necessary when
samples
(All of the above) have a chlorine residual, have a previously
been chlorinated, have been subjected to high temperatures,
contain high or low pH industrial wastes
Correct answer:(All of the above)
Question :Why is recirculation needed in a trickling filter?
Keep the media wet Further reduce BOD All of the above (a,
b, and c)
Correct answer:All of the above (a, b, and c)
Question :What type of fire extinguisher would be used on an
electrical control panel that has been de-energized?
Class A Class C (a and d)
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