CWEA Collections System Maintenance Grade 3 | Questions and Answers | Correct Latest 2023 Graded A+. When pouring a concrete slab, which of the following tools is used to finish the concrete?
a. Grasshopper.
b. Tamper.
c. Trowel.
d. Vibrator. Correct Answer: c. Trowel.
What tool is used to sna...
CWEA Collections System Maintenance Grade 3 | Questions with 100% Correct Answers Latest 2023 Graded A+ CWEA Collections System Maintenance Grade 3 | 82 Questions with 100% Correct Answers A Flagger should Stand? A. On the shoulder adjacent to traffic being controlled B. In the closed lane before stopping vehicle traffic C. In the traffic lane. D. As stated in "A" or "B" above. Correct Answer: D. As stated in "A" or "B" above. Legally responsible officials are required to report category 1 sanitary sewer overflows? A. Within 30 days B. Before end of the day C. As soon as possible D. Within 2 hours Correct Answer: D. Within 2 hours When working in confined spaces or sewers, what form of lighting would you use? A. Mirrors to direct the sunlight or explosion proof lighting. B. Ordinary electric lights C. Propane, Gas, or kerosene lanterns D. Special matches Correct Answer: A. Mirrors to direct the sunlight or explosion proof lighting. What can happen if water-based substances are used to extinguish electrical fires? a. Nothing but extinguish the fire b. The fumes are not harmful c. Receive an electrical shock d. They will corrode the electrical contacts Correct Answer: c. Receive an electrical shock When testing a manhole for explosive gases when should the first tests be made? a. After removing the manhole cover b. Before removing the manhole cover c. At any time d. After ventilation Correct Answer: b. Before removing the manhole cover Atmospheric hazards encountered in manholes can include: a. non-explosive atmospheres. b. non-toxic atmosphere. c. lack of oxygen. d. non-flammable atmospheres. Correct Answer: c. lack of oxygen. When setting up to ventilate a manhole, the air inlet should be how many feet above street level? a. 4.0 b. 3.0 c. 2.0 d. 1.0 Correct Answer: c. 2.0
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