Atena - Study guides, Class notes & Summaries

CWEA Collection Systems Maintenance Grades 1 (2024 / 2025 Update) Practice Questions and Verified Answers | 100% Correct | Grade A Q: The lack of an unpleasant odor in a manhole, loft station, or other structures does not always mean that dangerous gases aren't present because: Answer: Some dangerous gasses have no odor. Q: What should be considered when providing trench shoring? Answer: Depth of trench ( anything over 5' needs shoring) Q: Excavations & adjacent areas must be inspected on a da...

CWEA Collection Systems Maintenance Grades 2 (2024 / 2025 Update) Practice Questions and Verified Answers | 100% Correct | Grade A Q: What affects the flow capacity of a sewer line? Answer: Pipe size, pipe, material, grade Q: When a grade conflict exists between a Water main and a sewer main, which of the following is the best solution? Answer: Have the Water main adjusted and hold the grade on the sewer main Q: Why is the replacement of wastewater collection systems in some downtown streets dif...

CWEA Collection Systems Maintenance Grades 2 (2024 / 2025 Update) Exam | Questions and Verified Answers | 100% Correct | Grade A Q: What four conditions are necessary to create an explosion? Answer: Combustible gas, adequate oxygen, sufficient heat, and proper mixing of gas and oxygen. Q: What does "transition area" mean in traffic control? Answer: Moves traffic out of its normal path Q: The term

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QAC Category B Landscape Maintenance Perennial weeds are difficult to control because... They can reproduce from organs like rhizomes, stolons, tubers Insect order known to transmit plant disease Thysanoptera (Thrips) Insect order of pests to living plants Heteroptera (true bugs) Immature stages of insects Instars Insect order that suck juices from plant cells Homoptera (aphids and whiteflies) Part of plant nematodes often attack Roots & underground parts Plant disorder that cannot ...

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BNSF-Maintenance of Way Operating Rules Latest Update Graded A+ TWC Track warrant control- method to authorize train movements or protect men and equipment on a main track within specified limits in a territory designated by the timetable. Effective locking device When used in relation to a manually operated switch or derail, a lock that can be locked or unlocked only by the craft or group of workers applying the lock. Main Track A track extending through yards and between stations t...

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